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Bluelab pH Controller
24/7 complete management of your reservoir pH
- Automate pH control in reservoirs of up to 200 US gallons/760 litres
- 10 ml/min peristaltic pump delivers precise control
- Controls pH in the up (alkali) or down (acid) direction
- In-built safety lockouts prevent overdosing
- Dosing routine allows for effective mixing before next dose
- Auto-resume dosing when restarting after power loss
- High and low alarms to alert you when pH is out of range
- Acid- and alkali-resistant delivery tubing
- 2-metre/6-ft probe and power cable lengths and 4-metre/13.12-ft total tubing for best positioning and viewing
- Flexible mounting options for walls, posts and racks
- Easy-to-clean display built for clean environments
Simplified pH precision
Fine-tune your reservoir pH
The Bluelab pH Controller takes the complexity out of pH management, making precision easier than ever before. That’s because the in-built peristaltic pump provides precise control, delivering doses within a 0.1 pH tolerance.
The Bluelab pH Controller is also easy to use and programme; simply choose the pH control direction that’s best for your growing setup in the settings. You can either adjust for the pH-up (alkali) or pH-down (acid) direction.
In addition, this controller comes with a temperature probe, ensuring that all your pH measurements and doses will be automatically compensated for temperature. Simply set your pH target and let the Bluelab pH Controller do the rest.




Create the optimal pH environment
Stabilise your pH conditions
In recirculating and recycled reservoirs, your pH is constantly changing. That’s because the nutrient composition will change according to what the plants need.
And that’s where the Bluelab pH Controller can help – it will automatically track and adjust the pH levels in your reservoir. After all, when you keep pH and temperature steady, you’ll end up with healthier plants, improving both yield and quality.
Made in New Zealand with growers in mind
All our products are built in New Zealand with growers, for growers – this means you can be confident that your water-resistant Bluelab pH Controller can withstand the splashes that come with everyday growing.
In-built safety features
Plant-safe pH management
The versatile and hard-working Bluelab pH Controller has a number of features that have been designed to put the safety of your plants first.
You can set discreet visual high and low alarms for your preferred pH targets; these alarms will let you know whenever your pH is out of range. To help keep your plants safe from excessive doses, dosing will not occur whenever your controller is in alarm mode.
What’s more, you can set and customise dosing on- and off-times in the settings, which allows for effective mixing before the next dose, ensuring that you never overshoot your pH adjustments.




Bluelab pH Controller maintenance
Stay connected to your parameters
Stock up on everything you need to clean, maintain and calibrate your probes by purchasing a Bluelab Probe Care Kit and Bluelab calibration solutions.
If you need to monitor your pH remotely, why not consider upgrading to the Bluelab pH Controller Connect? With our free Connect software, you can stay connected to your reservoir pH 24/7.
For the ultimate nutrient and pH control, the Bluelab Pro Controller is a three-in-one solution that monitors and adjusts pH, EC/PPM and temperature in your reservoir.
Browse our online store to find exactly what you need.
More Product Information | |
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Product Warranty Period Details | Two-year limited guarantee (proof of purchase required); six months for the Bluelab pH Probe. Find out more about our product warranties. |