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Bluelab pH Controller keeps the pH of the irrigation reservoir stable in an automatic and continuous way, thanks to a peristaltic pump, precise pH probe, and monitoring with LCD screen. Ideal for indoor cultivation of cannabis plants that require a constant pH range to optimize nutrient absorption.

The Bluelab PH Controller works as the brain of the tank in indoor growing installations: it measures pH in real time and doses acid or base to maintain the target value. It works with tanks of up to 760 liters and offers a simple menu to set parameters, alarms, and dosing times.
It integrates a safety lock that stops dosing in case of errors, preventing overcorrections. The LCD screen with adjustable brightness allows you to read the pH even in low light.
Includes an independent temperature probe for precise compensation, interchangeable pH electrode, and acid/alkali-resistant tubes of 4 meters.
Factory settings include monitor mode and common references for irrigation: target pH 5.8, high alarm 6.5, low alarm 5.6, typical dosing cycle 1 s ON / 10 min OFF, brightness 100% and contrast 16, English language.
Compatible with Bluelab Connect Stick (optional accessory) to record data on a computer and optimize recipes with history. Designed for rooms with recirculating irrigation, DWC and automatic systems, it brings consistency to nutrition in cannabis cultivation and reduces the margin for human error.
In indoor growing a stable pH enables the correct assimilation of macro and microelements. This controller allows you to set a setpoint and maintain it without constant monitoring, something key in large tanks or multiple drip lines. Integration with growing meters for EC and temperature improves root zone diagnosis and prevents lockouts due to imbalances.
It is used to measure, dose and stabilize the pH of the nutrient solution. Keeping pH within target ranges (for example, 5.6–6.2 in hydroponic systems) reduces root stress and standardizes results in cannabis plants. The visual alarms warn when the value goes out of range, and the safety lock prevents continuous dosing in case of anomalous readings.
The combination of peristaltic pump, replaceable electrode, large screen and intuitive menu makes this device a central piece of indoor accessories. Wall mounting frees up space around the tank, the dosing tube reaches distant tanks and the temperature probe provides more consistent readings. All designed for daily use in professional indoor growing installations or advanced grow tents.
1) Installation: fix the unit to the wall, connect the peristaltic pump and tubes to the corrector drum (acid or base). Place the pH probe and temperature probe in the tank.
2) Configuration: turn on and set the target pH (e.g. 5.8), high/low alarm limits, and dosing ON/OFF times (e.g., 1 s ON and 10 min OFF). Adjust the brightness/contrast of the LCD screen.
3) pH Calibration: calibrate the electrode following the Bluelab procedure with buffer solutions. Check reading stability before enabling automatic dosing.
4) Operation: activate control mode. The pump doses micro-impulses to bring the value closer to the setpoint without overshoot. Review data periodically and, if you have a Connect Stick, export history for trend analysis.
5) Maintenance: rinse the probe with clean water, check the condition of the electrode, replace tubes when worn, check that the corrector drum is identified and protected. Maintain a regular calibration routine.
The price corresponds to a pH controller with automatic dosing, safety lock, simple operation and compatibility with Connect. Check promotions, packs with buffer solutions and consumables at Hydroponics Blanes, a benchmark Grow Shop in Spain in growing meters and indoor accessories.
Available at Hydroponics Blanes, trusted Grow Shop and online grow shop with discreet shipping. Advice to integrate the equipment into recirculating systems, choose compatible correctors and plan control routines in cannabis cultivation with tanks of up to 760 L.
For those looking to automate irrigation, the Bluelab PH Controller provides real stability: precise dosing, visible alarms and optional recording with Connect to fine-tune recipes. A tool designed to raise consistency and performance in indoor growing projects of cannabis plants managed by technical teams or demanding enthusiasts.
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