Bluelab Connect pH Controller - for Bluelab Connect Devices

Bluelab Connect pH Controller — Hands-Free Automated pH Monitoring & Dosing for Hydroponic Reservoirs

The Bluelab® Connect pH Controller is a set-and-forget automated pH management solution designed for hydroponic growers who want reliable, hands-free pH control without the complexity of a full multi-parameter system. Compatible with Bluelab Connect devices, this controller continuously monitors your reservoir's pH and automatically doses Bluelab pH Up or Down (undiluted) to maintain your target range — so you can focus on your crop, not your chemistry.

Designed for reservoirs up to 200 US gal / 760 L, the Connect pH Controller features a plant-safe green backlit LCD with adjustable brightness, a large easy-to-read display, and a simple push-button menu for programming, adjusting settings, and calibrating the probe. Built-in flashing high/low alarms with control lockouts protect against over-dosing, and auto-resume dosing after power loss ensures your system returns to normal operation without manual intervention.

The water-resistant, wall-mount housing is built for grow room environments. Included in the box: 13 ft of acid/alkali-resistant dosing tube, international power supply, replaceable double-junction pH probe, and temperature probe for automatic temperature compensation (ATC). The pH probe carries a 6-month guarantee.

Key Features

• Automated pH monitoring and dosing for reservoirs up to 200 US gal / 760 L
• Compatible with Bluelab Connect devices for expanded connectivity
• Plant-safe green backlit LCD with adjustable brightness
• Flashing high/low alarms with dosing lockouts to prevent over-dosing
• Auto-resume dosing after power loss
• Water-resistant, wall-mount housing
• Includes: 13 ft acid/alkali-resistant dosing tube, international power supply, replaceable double-junction pH probe, temperature probe (ATC)
• 6-month guarantee on pH probe

Frequently Asked Questions

What is the Bluelab Connect pH Controller and how does it differ from the pH Controller Connect?

The Bluelab Connect pH Controller is a standalone automated pH controller that is compatible with Bluelab Connect devices, allowing it to integrate into a broader Bluelab Connect ecosystem. The pH Controller Connect (a separate model) adds built-in wireless data logging via the Bluelab Connect Stick and remote monitoring via Google Docs™. The Connect pH Controller focuses on reliable automated pH dosing with Connect device compatibility, making it a strong choice for growers who already use Bluelab Connect infrastructure or want a straightforward automated pH solution.

What reservoir size is the Bluelab Connect pH Controller suitable for?

The Connect pH Controller is designed for reservoirs up to 200 US gallons (760 liters). It is well-suited for mid-size hobby grows, small commercial operations, and any setup where automated pH control is needed without the full multi-parameter capabilities of the Bluelab Pro Controller. For larger reservoirs or operations requiring simultaneous EC and temperature control, the Bluelab Pro Controller paired with a PeriPod dosing system is recommended.

Does the Bluelab Connect pH Controller protect against over-dosing?

Yes. The controller includes built-in dosing lockouts that prevent the system from over-dosing pH adjusters, even in fault conditions. Flashing high and low alarms alert you when pH drifts beyond safe thresholds, and the system automatically resumes dosing after a power loss without requiring manual reset. These safety features make the Connect pH Controller a reliable, low-maintenance solution for automated pH management.

How do I calibrate the Bluelab Connect pH Controller?

Calibration is performed directly on the unit using the simple push-button menu. Standard two-point calibration uses pH 7.0 (buffer) and pH 4.0 (slope) reference solutions. Bluelab recommends calibrating the pH probe at least once a week in active growing environments. The replaceable double-junction pH probe is designed for easy replacement when it reaches the end of its service life, and carries a 6-month guarantee from Bluelab.

Where can I buy the Bluelab Connect pH Controller?

The Bluelab Connect pH Controller is available through Seres Ag, a professional hydroponic and CEA equipment supplier serving growers across the United States. Purchase directly at seresag.com. Seres Ag offers expert product support, competitive wholesale and retail pricing, and US-wide shipping. For bulk or wholesale inquiries, contact the Seres Ag team through the website.