The Bluelab pH Controller is a professional‑grade, automated pH management system designed to maintain perfect pH levels in hydroponic reservoirs, nutrient tanks, and recirculating systems. Built for growers who demand precision and consistency, this controller continuously monitors your nutrient solution and automatically doses pH‑down to keep your plants in the optimal range for nutrient uptake and vigorous growth.

Featuring a high‑resolution digital display, lab‑quality pH probe, and intelligent dosing system, the Bluelab pH Controller eliminates the guesswork and manual adjustments that often lead to nutrient lockout, slow growth, or plant stress. Its advanced safety features — including dosing lockouts, alarms, and adjustable set‑points — ensure your system stays stable and protected at all times.

Whether you’re running DWC, RDWC, NFT, flood‑and‑drain, or coco drip systems, the Bluelab pH Controller delivers the accuracy and reliability needed for commercial‑level results.

Key Features & Benefits

Fully Automated pH Control

Continuously monitors and adjusts pH levels, ensuring your nutrient solution stays within the ideal range.

Includes Lab‑Quality pH Probe

Provides fast, accurate readings with long‑term stability.

Large, Easy‑to‑Read Digital Display

Clear, real‑time pH monitoring for quick visual checks.

Built‑In Safety Features

Adjustable alarms, dosing lockouts, and fail‑safe protections prevent over‑dosing and system errors.

Ideal for Hydroponic Systems

Perfect for DWC, RDWC, NFT, aeroponics, and recirculating setups where pH fluctuates frequently.

Temperature‑Compensated Readings

Ensures accuracy even when water temperature changes.

Simple Installation

Includes mounting hardware, dosing tube, and power supply for quick setup.

Compatible With pH‑Down Solutions

Designed to work with Bluelab pH‑Down or other approved acid‑based dosing liquids.

Optional Connect Upgrade

Some models allow remote monitoring and data logging via Bluelab Connect.