Quick Answer Fully automated pH dosing via a precision peristaltic pump at 10 ml/min, managing reservoirs up to 760 litres. Built-in safety lockouts prevent overdosing, and the system auto-resumes correctly after a power interruption. Best suited to growers wanting hands-off pH control rather than manual daily testing and dosing. Pairs with the Bluelab Guardian Monitor WiFi for complete continuous pH, EC and temperature monitoring. Bluelab pH Controller, Automated pH Dosing System for Hydroponic ReservoirsThe Bluelab pH Controller is a precision automated dosing system designed for continuous control of pH levels in hydroponic nutrient reservoirs. Engineered for accuracy and reliability, it monitors pH in real time and automatically doses pH adjusters to maintain optimal nutrient availability.Built for both professional and advanced growers, the system integrates a high-precision peristaltic pump delivering controlled dosing at 10 ml/min. This ensures gradual and accurate correction, preventing rapid fluctuations that can stress plants or disrupt nutrient uptake.The controller is capable of managing reservoirs up to 760 litres (200 US gallons), making it suitable for both hobby-scale systems and commercial hydroponic operations.With intelligent safety lockouts and dosing intervals, the system prevents overdosing while allowing adequate mixing time between adjustments. High and low alarms provide immediate alerts when pH drifts outside defined parameters, ensuring rapid response and system stability.The unit automatically resumes operation after power loss, maintaining consistent control without manual intervention.Key Benefits Fully automated pH control for hydroponic reservoirs. Continuously monitors and adjusts pH without manual intervention, maintaining stable nutrient conditions across all growth stages. Precision peristaltic dosing pump at 10 ml/min. Delivers controlled, gradual pH correction to prevent rapid fluctuations that stress plants or disrupt nutrient uptake. Reservoir capacity up to 760 litres. Suitable for hobby-scale systems through to large commercial hydroponic operations. Built-in safety lockouts to prevent overdosing. Intelligent dosing intervals allow adequate mixing time between adjustments, protecting plants from pH shock. High and low pH alarms. Immediate alerts when pH drifts outside defined parameters for rapid response and system stability. Auto-resume after power interruption. System restores automated operation without manual reconfiguration following power loss. How It Works pH probe continuously monitors nutrient solution. The probe measures pH in real time, transmitting data to the controller for constant assessment against the target range. Controller detects deviation from target pH. When pH moves outside the set parameters, the controller activates the dosing pump to initiate correction. Peristaltic pump doses pH up or down solution. Controlled delivery at 10 ml/min ensures gradual, accurate adjustment without overshooting the target pH. Dosing pauses to allow mixing before next adjustment. Intelligent intervals give the solution time to homogenise before the next reading and dose cycle. System maintains stable pH automatically. Continuous monitoring and correction cycles keep the reservoir within the defined pH range without manual input. System Features Automated pH up and pH down dosing. Controls both alkali and acid dosing lines for complete bidirectional pH management. Built-in safety lockouts. Prevents overdosing by enforcing minimum intervals between dose cycles and maximum dose limits. Intelligent dosing intervals. Allows solution mixing time between adjustments for accurate, stable pH correction. Auto-resume after power interruption. Restores full automated operation without manual reconfiguration following power loss. Acid- and alkali-resistant tubing. 4-metre tubing supplied, rated for use with pH up and pH down solutions. Flexible mounting options. Compatible with wall, rack, and post mounting for versatile installation in grow rooms and commercial facilities. Easy-clean display. Smooth surface design for hygienic maintenance in grow environments. 2-metre probe and power cables. Sufficient length for flexible reservoir placement and controller positioning. Applications Automatic pH dosing system for hydroponic nutrient reservoirs Australia Continuous pH control for recirculating and DWC hydroponic systems Commercial hydroponic pH regulation and automation Reservoir pH management for large-scale indoor grow operations Automated nutrient solution pH control for grow rooms and tents pH automation system for professional hydroponic facilities Recommended With pH up and pH down solutions. Required consumables for the dosing system. Ensure adequate supply volume relative to reservoir size and correction frequency. Bluelab Guardian Monitor WiFi. Pairs with the pH Controller for complete continuous monitoring of pH, EC, and temperature with remote access via the Edenic app. Bluelab pH Probe Double Junction. Replacement double junction pH electrode with BNC connector for extended probe life and consistent accuracy. What Sets It ApartThe Bluelab pH Controller is engineered for fully automated nutrient management, eliminating manual pH adjustments while maintaining consistent solution stability. Its precision peristaltic dosing system, intelligent safety lockouts, and auto-resume function ensure accurate, reliable performance in both hobby and commercial hydroponic environments where pH stability is critical to yield and plant health.Technical Specifications Control Function. Automatic pH up and pH down dosing Reservoir Capacity. Up to 760 litres (200 US gallons) Pump Type. Peristaltic dosing pump Flow Rate. 10 ml/min Monitoring. Continuous real-time pH measurement Alarms. High and low pH threshold alerts Power Supply. Mains powered Probe Cable Length. 2 metres Tubing Length. 4 metres total Product Weight. Approximately 2 to 3 kg Packaged Shipping Weight. Approximately 3 to 4 kg Frequently Asked Questions How often should I calibrate Bluelab pH Controller? pH meters should be calibrated before every use or at minimum every 2 to 3 days during active grows. EC meters are more stable but should be verified against a known reference solution weekly. Bluelab pH Controller uses two-point calibration for pH (4.0 and 7.0 buffer solutions) and single-point calibration for EC (2.77 mS/cm standard). Regular calibration is the single most important factor in measurement accuracy. How do I store Bluelab pH Controller properly? Always store pH probes wet. Never allow the probe tip to dry out as this permanently damages the glass membrane. Use the probe storage solution supplied with Bluelab pH Controller or Bluelab KCl storage solution. EC probes are more robust but should also be rinsed with clean water after each use. Store Bluelab pH Controller at room temperature away from direct sunlight. What should I do if Bluelab pH Controller is reading incorrectly? First, recalibrate using fresh buffer solutions, since old or contaminated calibration fluid is the most common cause of inaccurate readings. Rinse the probe thoroughly with deionised or distilled water between calibrations. If readings are still inconsistent after recalibration, check the probe for physical damage or contamination. Most probes have a service life of 12 to 18 months with proper care. Is Bluelab pH Controller waterproof? Check the IP rating listed in the product specifications. Most handheld meters are splash-proof but not designed for submersion. Take care when measuring in deep reservoirs to avoid dropping the unit. Bluelab pH Controller is designed for hydroponic nutrient solution testing. It is not rated for outdoor or continuous immersion use. Does Bluelab pH Controller ship fast within Australia? Yes, Bluelab pH Controller ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2 to 5 business days. WA, NT, and TAS orders typically arrive within 5 to 12 business days.
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