How Much Does an Owner Make from an Automated Hydroponic Farm System?

Are you seeking to significantly boost the profitability of your automated hydroponic farm? Discover how implementing nine strategic approaches can revolutionize your operations, from optimizing resource utilization to enhancing market reach, ensuring your business thrives. Ready to unlock the full financial potential of your high-tech agricultural venture and explore robust financial planning tools? Learn more about maximizing your returns.

Strategies to Increase Profit Margin

Boosting the profitability of an automated hydroponic farm system involves a multi-faceted approach, targeting both revenue enhancement and cost reduction. The following table outlines nine key strategies, providing a concise description of each and its potential financial impact on the business's bottom line.

Strategy Description Impact
Selecting High-Value Crops Focus on high-demand, high-margin specialty crops. Can increase revenue by generating $8,601 per 36-week cycle for basil vs. $1,881 for lettuce in a 96-tower system. Diversification can increase sales by up to 30%.
Implementing Advanced Automation Automate tasks like seeding, monitoring, and harvesting. Reduces labor costs, which can be 30% to 60% of total operating costs. Minimizes nutrient waste (15-20% of operating expenses).
Reducing Operational Costs Through Energy Efficiency Upgrade to energy-efficient technologies and optimize climate control. LED grow lights can save 50% to 90% more energy. Energy can account for up to 30% of monthly expenses.
Driving Direct-To-Consumer Sales Leverage brand story, social media, and local partnerships. Builds loyal customer base, potentially increasing sales and premium pricing.
Creating Value-Added Products Transform raw crops into processed goods or offer related services. Commands higher price points and better profit margins than raw produce. Diversifies revenue beyond fresh produce.
Optimizing Resource Management Implement precise control over water, nutrients, and environmental factors. Reduces water usage by 70-95% compared to traditional farming. Minimizes nutrient waste, leading to cost savings.
Expanding Market Reach Target diverse customer segments and explore new distribution channels. Increases sales volume and reduces reliance on single market segments.
Continuous Research and Development (R&D) Invest in improving crop varieties, growing techniques, and system efficiency. Can lead to yield increases of 20-50% or more and improved crop quality, justifying premium pricing.
Strategic Partnerships and Collaborations Form alliances with technology providers, distributors, or research institutions. Can reduce initial capital expenditure by 10-20% through shared resources and expertise, and open new market opportunities.

How Much Do Automated Hydroponic Farm System Owners Typically Make?

The income for owners of an Automated Hydroponic Farm System in the USA typically ranges from $50,000 to $150,000 annually. This figure can vary significantly based on several factors, including the operation's scale, specific crop choices, geographic location, and the chosen business model. For instance, small-scale urban hydroponic farms might generate annual revenues between $50,000 and $80,000, while larger commercial operations can exceed $200,000 in revenue. The owner's ultimate take-home pay is heavily influenced by how effectively the hydroponic farm's operational costs are managed and how profitability is maximized.

Farm size is a major determinant of revenue potential for an automated hydroponic business. Larger farms often benefit from economies of scale, allowing for increased production capacity and a broader consumer base. However, these larger setups also demand higher initial investments in infrastructure and technology. For example, a mid-sized system can have an initial setup cost ranging from $50,000 to $100,000, as detailed in articles discussing the cost to open an automated hydroponic farm. This upfront investment is crucial for scaling and achieving higher returns.

Location also plays a critical role in how much an Automated Hydroponic Farm System owner can make. Farms situated in urban areas, for example, typically face higher real estate and operational costs. Despite these increased expenses, they can often command premium prices for their produce due to high consumer demand for local, fresh goods. This strategic placement allows for a financial approach that captures higher profit margins, even when facing elevated overheads. For more insights on financial strategies, refer to resources like financialmodel.net on hydroponic farm profitability.


Key Factors Influencing Hydroponic Farm Owner Income:

  • Scale of Operation: Larger commercial hydroponics setups generally yield higher revenues due to increased production capacity.
  • Crop Selection: Choosing high-value hydroponic crops for sale, such as specialty herbs or microgreens, can significantly boost profit margins.
  • Location: Urban farms may incur higher costs but can charge premium prices for their fresh, locally grown produce.
  • Business Model: Whether focusing on direct-to-consumer hydroponic sales, wholesale, or value-added hydroponic products impacts overall income.

Are Automated Hydroponic Farm System Businesses Profitable?

Yes, an Automated Hydroponic Farm System can be a highly profitable business venture. Approximately 60% of hydroponic farms, regardless of their structure, report profitability. The commercial viability of such systems, like those offered by GreenThumb AI, stems from their ability to achieve high crop yields, facilitate year-round production, and ensure efficient resource use, which are key advantages over traditional farming methods.

The global hydroponics market demonstrates strong growth potential, with projections indicating it will reach $16 billion by 2025. This growth underscores the increasing demand and economic viability of this sector. Successful hydroponic farms can generate an average revenue of $2,115 per square foot. Specifically, profitable indoor vertical farms earn an average of $1,488 per square foot after accounting for all operational costs, showcasing robust financial returns per area, as detailed in articles like this one on hydroponic farm profitability.

Profitability is closely linked to the selection of crops. Leafy greens and microgreens, for example, can achieve profit margins as high as 40% due to their lower operational costs and consistent market demand. For instance, dedicating a 96-tower farm to basil can generate over $8,600 in a 36-week cycle. In contrast, growing lettuce in the same system would yield only $1,881, highlighting the significant impact of strategic crop choice on maximizing profit in hydroponic farming.


Key Factors Influencing Hydroponic Farm Profitability:

  • Crop Selection: High-value crops like herbs and microgreens significantly boost revenue.
  • Operational Efficiency: Automation reduces labor and resource costs, improving overall margins.
  • Market Demand: Targeting markets willing to pay premium for fresh, locally grown produce.
  • Resource Management: Efficient use of water, nutrients, and energy minimizes expenses.

While the potential for high returns exists, profitability is not guaranteed for every operation. Reports indicate that only 27% of all indoor vertical farms turn a profit, though 50% of container farms are profitable. Success often hinges on effective management of high operational costs, such as energy and labor, and leveraging automated nutrient delivery systems to optimize growth conditions and reduce waste. Businesses like GreenThumb AI focus on streamlining these aspects to enhance commercial hydroponics success.

What Is The Average Profit Margin For An Automated Hydroponic Farm System?

The average profit margin for an Automated Hydroponic Farm System typically falls between 15% and 30%. However, some well-managed operations, especially those leveraging advanced automation like GreenThumb AI, can achieve margins ranging from 30% to 50% by optimizing their hydroponic profit strategies. This higher profitability is often linked to efficient resource management and high-value crop selection, which are critical for maximizing profit in hydroponic farming.

Operational costs are a primary factor influencing these margins, often consuming 40-60% of total revenue. Key expenses within an automated hydroponic business include utilities, labor, and nutrient solutions. For instance, electricity can account for up to 30% of monthly expenses, while labor costs typically range from 30-50% of total operating expenses. Nutrient solutions, essential for plant growth, represent another significant cost, usually around 15-20% of operating expenses. Effective hydroponic operational costs management is crucial for improving profit margins.


Impact of Crop Selection on Profit Margins

  • Leafy greens like lettuce can yield profit margins of 20-30%.
  • Herbs often produce margins between 15-25%.
  • Hydroponically grown leafy greens and microgreens can achieve the highest profit margins, reaching up to 40% due to their rapid growth cycles and consistent market demand.

As an Automated Hydroponic Farm System scales, profit margins can improve. Farms that achieve an optimal scale have reported margins increasing from a baseline of 20% to as high as 35% within a few years. This improvement is primarily due to reduced per-unit costs as production volume increases and efficiencies are gained through economies of scale. For more detailed insights on the financial aspects, you can refer to articles like financialmodel.net/blogs/profitability/automated-hydroponic-farms.

What Are The Most Profitable Crops For An Automated Hydroponic Farm System?

For an Automated Hydroponic Farm System, selecting the right crops is crucial for maximizing profit. Herbs and leafy greens consistently rank as the most profitable options due to their high market demand, rapid growth cycles, and continuous yields. These crops align well with strategies for increasing hydroponic farm profitability, ensuring a steady revenue stream.

High-value herbs offer significant returns. For instance, basil is frequently cited as the single most profitable crop for hydroponic cultivation. Other valuable herbs include dill and chives, which can sell for an average of $14 per pound. Niche markets can offer even higher margins; specialty herbs like shiso can command prices as high as $200 per pound, creating an extremely profitable segment for hydroponic produce. This focus on high-value hydroponic crops for sale directly boosts revenue potential.

Leafy greens such as lettuce, spinach, and kale are also highly profitable. Their rapid growth and strong consumer demand make them staples for a successful automated hydroponic business. Certain lettuce varieties can be harvested multiple times from a single plant, significantly maximizing the crop yield from a small footprint. This efficiency contributes to lower hydroponic operational costs and higher overall profitability.

While herbs and greens dominate, other crops can also be very lucrative for a commercial hydroponics setup, though they might have longer growth cycles. For example, ginseng can be highly profitable, selling for between $500 to $600 per pound when dried. However, its slower growth means it requires a different investment and rotation strategy compared to fast-growing leafy greens and herbs.


Key Profitable Hydroponic Crops

  • Basil: Often the most profitable, with high market value and continuous yields.
  • Specialty Herbs (e.g., Shiso): Can sell for up to $200 per pound, targeting niche markets.
  • Leafy Greens (Lettuce, Spinach, Kale): Benefit from rapid growth and strong consumer demand.
  • Ginseng: High per-pound value ($500-$600 dried), but a much slower growth cycle.

How Does Automation Increase Hydroponic Farm Efficiency?

Automation significantly boosts the efficiency of an Automated Hydroponic Farm System, primarily by reducing labor costs and ensuring consistent, optimal growing conditions. By automating tasks that are repetitive and labor-intensive, such as nutrient delivery, irrigation, and climate control, farms can sharply decrease their reliance on manual labor. Labor typically accounts for a substantial portion of operational expenses, often ranging from 40% to 60% of total costs for a hydroponic business, as highlighted in resources like financialmodel.net.

Automated nutrient delivery systems are a key component, using sensors to monitor and precisely adjust pH and nutrient levels in real-time. This ensures plants consistently receive the exact optimal mix, preventing waste and promoting healthier growth. The precision afforded by these systems leads to faster growth cycles and higher crop yields, directly improving overall hydroponic farm profitability.


Key Automation Benefits for Efficiency:

  • Reduced Labor Dependency: Robotic systems and automated processes handle tasks like planting, monitoring, pruning, and harvesting. This enables round-the-clock operations, increasing productivity and minimizing human error.
  • Optimized Resource Use: AI-driven systems and automated controls ensure efficient use of water and nutrients. For instance, nutrient solutions can represent 15-20% of operating expenses; automation minimizes waste through precise application, directly impacting hydroponic profit strategies.
  • Stable Growing Environment: Automated climate control for temperature, humidity, and CO2 levels creates an ideal and consistent environment for plants. This stability leads to more reliable and predictable outcomes, maximizing production and reducing the risk of crop failure due to environmental fluctuations.

The integration of advanced automation, including AI and robotics, further enhances efficiency. These technologies contribute to a higher return on investment for the hydroponic system by ensuring optimal plant health and consistent production, making the automated hydroponic business more competitive and sustainable.

How Can Selecting High-Value Crops Boost An Automated Hydroponic Farm System's Profitability?

Focusing on high-value hydroponic crops directly increases revenue potential, forming a core strategy for maximizing profit in hydroponic farming. For an Automated Hydroponic Farm System like GreenThumb AI, selecting high-demand, high-margin crops is crucial. These crops, such as basil, microgreens, and other specialty herbs, command premium prices in the market, significantly impacting hydroponic farm profitability. This approach helps reduce the time to achieve a positive return on investment (ROI) for the hydroponic system.

Strategic crop selection allows Automated Hydroponic Farm Systems to optimize their output for maximum financial gain. For instance, herbs like basil, dill, and chives can be sold for approximately $14 per pound, while cilantro typically sells for around $6 per pound. Targeting even more niche markets with crops like ginseng ($500-$600/lb dried) or shiso (up to $200/lb) can dramatically increase profitability. This focus on premium produce ensures that each unit of output from the automated system generates higher income, improving overall vertical farming economics.

The financial impact of strategic crop selection is substantial. For example, in a 96-tower vertical farming system, dedicating half the production to basil (at a wholesale price of $16/lb) can generate $8,601 per 36-week cycle. In contrast, growing lettuce (at $3.50/lb) in the same setup would only generate $1,881. This demonstrates the significant difference in revenue potential. Such strategic choices are vital for an automated hydroponic business to increase hydroponic profits and achieve sustainable agriculture goals while maintaining low hydroponic operational costs.


Maximizing Revenue Through Crop Diversification and Niche Markets

  • Diversify Crop Portfolio: Grow a variety of high-demand crops to cater to different market segments. This approach helps mitigate risks associated with reliance on a single crop and broadens sales opportunities.
  • Target High-Value Niche Markets: Focus on selling to restaurants, health-conscious consumers, and specialty food stores. These buyers often pay premium prices for fresh, locally grown hydroponic produce, increasing sales by up to 30%.
  • Consider Value-Added Products: Explore processing high-value herbs into pesto, dried herbs, or essential oils. This can create additional revenue streams and increase the perceived value of your produce.
  • Optimize Crop Density: Use automated systems to maximize crop density in vertical farming, ensuring that every square foot of growing space is utilized for the most profitable crops.

By prioritizing high-value hydroponic crops for sale, an Automated Hydroponic Farm System effectively leverages its controlled environment agriculture capabilities. This strategy directly contributes to maximizing profit in hydroponic farming by ensuring that the significant investment in automated nutrient delivery systems and climate control in greenhouses yields the highest possible returns. It’s a key step in transforming raw hydroponic crop yield into substantial financial gains, aligning with the goal of increasing hydroponic profits.

What Are The Financial Benefits Of Implementing Advanced Automation In An Automated Hydroponic Farm System?

Implementing advanced automation in an Automated Hydroponic Farm System significantly boosts profitability by addressing core operational expenses and enhancing productivity. This approach directly impacts the bottom line, making the 'GreenThumb AI' business model highly efficient.

How Does Automation Reduce Hydroponic Labor Costs?

Automation drastically cuts labor expenses, which are often the largest operational cost for hydroponic farms. Labor can constitute anywhere from 30% to 60% of a hydroponic farm's total operating costs. Automated systems perform tasks such as seeding, nutrient delivery, environmental monitoring, and even harvesting. This reduces the need for extensive manual labor, allowing businesses to operate with fewer staff members or reallocate personnel to higher-value activities like sales and marketing. For a commercial hydroponics operation, this reduction in labor overhead translates directly into increased hydroponic farm profitability.

How Does Automation Optimize Resource Use and Lower Material Costs?

Advanced automation leads to more efficient use of critical resources, directly lowering material costs. Automated nutrient delivery systems and precise climate control mechanisms ensure that water and nutrient solutions are applied exactly as needed. Nutrient solutions alone can account for 15-20% of operating expenses in hydroponic farming. Automation minimizes waste through precise application, preventing overuse and runoff. AI-driven systems further optimize resource use by leveraging predictive analytics, adjusting inputs based on real-time plant needs and environmental conditions. This intelligent management of resources contributes significantly to sustainable agriculture and improved financial performance.

How Does Automation Increase Crop Yield and Consistency?

Automation ensures higher and more consistent crop yields, directly increasing revenue for an automated hydroponic business. By providing precise, continuous control over the growing environment—including temperature, humidity, light, and nutrient levels—automated systems ensure optimal plant health and accelerated growth cycles. This leads to increased productivity per square foot, a key factor in vertical farming economics. The consistency in yield also reduces crop failures and ensures a steady supply of produce, improving the return on investment (ROI) for the hydroponic system and enhancing the business's ability to meet market demand reliably.

What Is The Market Trend For Agricultural Robotics and Its Financial Impact?

The global agricultural robotics market's rapid growth underscores the recognized value of automation in improving financial performance within controlled environment agriculture. This market is projected to grow substantially, from $13.5 billion in 2023 to $40.1 billion by 2028. This significant expansion highlights the increasing adoption of automation technologies to enhance efficiency, reduce costs, and boost profitability in farming operations. For 'GreenThumb AI,' this trend confirms that investing in advanced automation is not just an operational upgrade but a strategic financial decision aligned with industry-wide advancements in sustainable agriculture.


Key Financial Benefits of Hydroponic Automation

  • Reduced Labor Costs: Automation decreases reliance on manual labor, which typically makes up 30-60% of operational expenses.
  • Optimized Resource Use: Automated systems precisely manage water and nutrient delivery, cutting material waste and lowering costs for inputs like nutrient solutions (15-20% of expenses).
  • Increased Crop Yields: Consistent environmental control leads to higher, more predictable harvests, boosting revenue and improving return on investment.
  • Enhanced Consistency: Automation minimizes human error and environmental fluctuations, resulting in uniform product quality and reliable supply.
  • Market Growth Alignment: Investing in automation positions the business within a rapidly expanding market, with agricultural robotics projected to reach $40.1 billion by 2028.

How Can An Automated Hydroponic Farm System Reduce Operational Costs Through Energy Efficiency?

An Automated Hydroponic Farm System, like GreenThumb AI, significantly cuts operational costs by focusing on energy efficiency. Energy can account for up to 30% of monthly expenses in hydroponic operations. Implementing strategic upgrades and smart technologies directly reduces this burden. The primary strategy involves replacing traditional High-Intensity Discharge (HID) lighting with high-efficiency LED grow lights. These LEDs can save between 50% and 90% more energy compared to older systems, directly impacting the bottom line and increasing hydroponic profitability.

Automating climate control is another critical step in reducing energy consumption. Smart systems adjust temperature, humidity, and lighting based on real-time data and weather forecasts. This prevents energy waste by ensuring resources are only used when necessary. For instance, small indoor farms typically spend an average of $3.45 per square foot on energy, representing 12% of their total operating expenses. In contrast, large farms can spend $8.02 per square foot, making up 25% of their expenses. This highlights the urgent need for efficiency measures at every scale to manage hydroponic operational costs effectively.


Key Strategies for Energy Cost Reduction

  • Renewable Energy Integration: Incorporating solar or wind power drastically lowers reliance on grid electricity. This reduces long-term energy costs, enhancing the business's economic viability and promoting sustainable agriculture. Many governments offer grants or tax incentives for adopting such sustainable energy practices, further improving return on investment for the hydroponic system.
  • Optimized Insulation and Layout: Properly insulating the growing environment is crucial. This, coupled with optimizing the layout for improved airflow and maximizing natural light, prevents heat loss. It also reduces the energy required for heating and cooling systems, contributing to overall energy efficiency in hydroponic farms.
  • Automated Nutrient Delivery Systems: While not directly energy-saving, efficient nutrient delivery systems ensure plants receive precise amounts, optimizing growth and reducing the need for excessive light or environmental adjustments that consume more energy.

Investing in energy-efficient components and systems from the outset for an automated hydroponic business ensures long-term savings. This approach not only supports environmental sustainability but also directly impacts the maximizing profit in hydroponic farming by lowering one of the largest recurring expenses. It contributes to a stronger hydroponic system return on investment and helps manage overall controlled environment agriculture costs.

What Marketing Strategies Can Drive Direct-To-Consumer Sales For An Automated Hydroponic Farm System?

Driving direct-to-consumer (D2C) sales for an Automated Hydroponic Farm System like GreenThumb AI requires a multi-faceted marketing approach. The goal is to build brand loyalty and trust by highlighting the unique benefits of hydroponically grown produce. This strategy focuses on connecting directly with consumers, emphasizing quality, sustainability, and local sourcing to secure a strong market position and increase hydroponic profits.

A strong brand narrative is crucial for D2C hydroponic sales. Emphasize the sustainability, freshness, and local origin of your hydroponic produce. This narrative resonates with environmentally conscious consumers. For example, highlight how GreenThumb AI’s automated systems use up to 90% less water than traditional farming, promoting sustainable agriculture. Share this story through digital marketing channels to build a loyal customer base, differentiating your produce in the competitive market.


Leveraging Digital Channels for Hydroponic Produce Marketing

  • Social Media Engagement: Utilize platforms like Instagram and Facebook to showcase the vibrant produce and the clean, high-tech growing environment of your automated hydroponic business. Visually appealing content attracts followers, while targeted digital ads can reach specific customer demographics interested in fresh, locally grown produce. This helps optimize crop density in vertical farming by creating demand for diverse yields.
  • Email Marketing: Build an email list to send regular updates on new crops, special offers, and educational content about the benefits of hydroponics. This direct communication channel fosters community and encourages repeat purchases, contributing to maximizing profit in hydroponic farming.
  • Website and E-commerce: Establish a user-friendly website with an integrated e-commerce platform for easy online ordering. Provide detailed product descriptions, nutritional information, and transparent pricing. This streamlines the direct-to-consumer sales process for your automated hydroponic farm.

Establishing partnerships with local businesses is a powerful strategy for increasing hydroponic profits. Restaurants and chefs often seek high-quality, fresh ingredients year-round. Offering to supply them directly highlights the superior quality and taste of your hydroponic products, creating a consistent revenue stream. This approach also reduces marketing costs by leveraging existing business networks and helps solidify your position within the niche market for hydroponic produce. These partnerships can also lead to word-of-mouth referrals, further expanding your reach.

Engaging the community builds brand trust and awareness for your Automated Hydroponic Farm System. Participating in farmers' markets allows direct interaction with consumers, offering samples and educating them about the advantages of a controlled environment for growing. Hosting farm tours or educational workshops can demystify hydroponics and highlight your commitment to sustainable practices. This direct engagement creates loyal customers willing to pay a premium for your produce, contributing significantly to your commercial hydroponics profitability. It also offers opportunities to discuss high-value hydroponic crops for sale and the benefits of automated nutrient delivery systems.

How Does Creating Value-Added Products Diversify Revenue For An Automated Hydroponic Farm System?

Creating value-added products is a core strategy for increasing hydroponic farm profitability and diversifying revenue streams for an automated hydroponic business. Instead of solely selling raw produce, an operation like GreenThumb AI can transform its fresh crops into higher-margin goods. This approach directly addresses the question: How can I make my hydroponic farm more profitable? By processing raw harvest into items like ready-to-eat packaged salad mixes, herb-infused oils, gourmet sauces, or nutrient-rich cold-pressed juices, the business taps into new consumer segments. These processed items often command significantly higher price points and yield better profit margins than selling fresh, unpackaged produce alone. This strategy is crucial for maximizing profit in hydroponic farming, extending the farm's reach beyond traditional fresh markets.

What Specific Value-Added Products Can Increase Hydroponic Profits?

Diversifying revenue with value-added products extends the shelf life of harvested crops and reduces waste, a key aspect of sustainable agriculture. For example, herbs not sold fresh can be dried, packaged as specialty blends, or incorporated into culinary products. This transforms potential waste into additional income. Beyond direct food products, an automated hydroponic farm system can offer services and goods that leverage its expertise and infrastructure. These initiatives generate significant additional income and build a strong community around the brand, like GreenThumb AI's mission to empower individuals.


Examples of Value-Added Products and Services for Hydroponic Farms

  • Packaged Salad Mixes: Ready-to-eat blends of hydroponically grown greens, appealing to consumers seeking convenience.
  • Herb-Infused Oils & Vinegars: Utilizing fresh herbs like basil, rosemary, or oregano to create gourmet cooking ingredients.
  • Cold-Pressed Juices & Smoothies: Leveraging high-yield greens and fruits from the hydroponic system for healthy beverages.
  • Dried Herb & Spice Blends: Extending the shelf life of unsold fresh herbs by drying and packaging them for culinary use.
  • Hydroponic Farm Tours: Educational experiences that charge visitors to learn about controlled environment agriculture and see the automated systems in action.
  • Educational Workshops: Offering classes on topics such as 'Home Hydroponics Basics' or 'Growing Profitable Hydroponic Herbs,' attracting new enthusiasts.
  • Home-Sized Hydroponic Kits: Selling simplified versions of the automated systems, allowing consumers to grow their own produce, complete with seeds and nutrient solutions.

How Do Value-Added Products Enhance Market Reach and Brand Loyalty?

Value-added products not only diversify revenue but also enhance market reach and foster brand loyalty. By offering a range of products, an automated hydroponic farm business can cater to various consumer needs, from those seeking fresh produce to others desiring convenience or specialized culinary items. This broadens the customer base beyond direct-to-consumer hydroponic sales or restaurant partnerships. For instance, a GreenThumb AI farm selling packaged juices might attract health-conscious consumers who do not typically buy raw greens. This strategy also allows for stronger branding and storytelling around the sustainable, locally grown hydroponic produce, building a unique market niche. It helps answer the question: How do you market and sell hydroponic produce effectively? Ultimately, this approach transforms raw agricultural output into a robust, multi-faceted business model, increasing commercial hydroponics profitability and ensuring a higher return on investment for the hydroponic system.