Products
Runoff & Drainage Sensor
Drainage volume and EC monitoring for substrate crop management
The Farmnet runoff and drainage sensor monitors drainage volume and electrical conductivity (EC) from pot-based and coco substrate growing systems. Integrated with FISMART fertigation, it provides real-time data for substrate management, nutrient recovery decisions, and irrigation strategy adjustments.
our core strengths
Proven at Scale, Built for Performance
Farmnet manages the variables that determine crop consistency and operational efficiency. Systems are deployed across greenhouse, open-field, and indoor production environments, providing real-time control of temperature, humidity, CO₂, water delivery, and nutrient dosing.
Operating at national scale within the world's largest agricultural economy. Farmnet systems support dense networks of greenhouse and open-field operations across the highest-intensity production regions.
End-to-end production capability. Controllers, fertigation units, and system components are designed, produced, and validated within Farmnet's dedicated industrial facilities.
More than a decade of continuous development in agricultural control systems, refined through multiple technology generations and operational requirements.
Multidisciplinary engineering organisation focused on agricultural automation, control architecture, hardware design, and software systems.
Systems operating across diverse climates and production models—from arid environments to advanced controlled-environment agriculture.
Thousands of systems in continuous 24/7 operation, generating long-term performance data that informs system reliability and design.
Technical Specifications
- Measures
- Drainage volume (L) + drainage EC (mS/cm)
- Systems
- Pots, hanging coco bags, gutter trays
- Integration
- FISMART fertigation systems, Farmnet Platform
- Data use
- Substrate management, recycling decisions, irrigation adjustment
- Installation
- At drainage collection point per zone or per block
Key Features
Drainage fraction monitoring
Track the percentage of applied irrigation that drains — maintain the target drainage fraction to prevent salt accumulation in the substrate.
Drainage EC tracking
High drainage EC signals salt build-up in the substrate; low drainage EC signals over-irrigation and nutrient dilution.
Recycling decision support
Drainage volume and EC data informs DISMART UV disinfection and FN-BV blending decisions for safe, efficient drainage recycling.
Ecosystem
Works Together With
Fertigation Systems
Drainage EC feeds back into FISMART for irrigation and recipe adjustments.
Learn MoreDISMART UV Disinfection
Drainage volume data supports sizing and operation of the UV disinfection system.
Learn MoreApplications
Where It's Used
Substrate crop production
Tomatoes, peppers, cucumbers, and strawberries grown in coco coir, rockwool, or peat with closed or semi-closed drainage management.
Closed-loop recirculating systems
Operations aiming to recycle 80–100% of drainage water — drainage monitoring is essential for safe and efficient recycling.
Next Step
Close the loop on substrate management.
Tell us your growing system and drainage recycling target. We'll confirm the right sensor setup for your substrate crops.