Bluelab PROBPHLEAP pH Probe in Water and Soil - Accurate Hydroponic

Our review of the Bluelab PROBPHLEAP pH Probe finds it best suited to growers who need a reliable replacement probe for routine hydroponic and indoor plant monitoring; the single biggest reason to buy is its double junction design that extends service life and reduces contamination compared with single-junction pens and test strips. Out of the box it connects to compatible Bluelab meters and offers straightforward calibration, making it a practical swap-in for those maintaining coco coir, rockwool, reservoirs or tanks.

Key Features

• Double junction probe: reduces contamination and gives a longer lifespan versus standard probes so readings remain stable over more tests.
• Works in water and soil: reliably measures pH in solution and media such as coco coir and rockwool so users can make precise up and down adjustments.
• Compatibility: designed to plug directly into Bluelab Combo Meter, Combo Meter Plus and Multimedia pH Meter for seamless replacement.
• Fully waterproof: the probe and cable joint are waterproof so it withstands use in reservoirs and wet growing environments.
• 2 m cable and BNC connector: the 2 meter / 6.6 ft cable and supplied BNC connector give flexible placement without extra parts.
• Kit contents: arrives with cable, storage cap, probe holder and KCl solution in the cap for storage and short-term maintenance.

Who It's For

The Bluelab PROBPHLEAP suits hobby and small commercial growers who already use Bluelab meters and want a like-for-like replacement that improves reliability and reduces contamination risk. It is particularly useful for people running hydroponic reservoirs, indoor grow tents, or working with coco or rockwool where accurate pH control is essential for nutrient uptake.

Those seeking the cheapest single-use testing method or who need a probe with an extended manufacturer warranty beyond the supplied limited coverage might look elsewhere; the product carries a 6-month limited warranty and some users note durability can be an issue over long-term heavy use.

Pros & Cons

Pros

• Durable double junction design improves longevity and measurement stability.
• Easy calibration and true plug-and-play compatibility with Bluelab meters.
• Fully waterproof including the cable joint, suitable for wet environments.
• Includes useful accessories like storage cap, probe holder and KCl solution.

Cons

• Some users report mixed calibration experiences and the probe may require occasional re-calibration to stay accurate.
• Perceived value varies; a few buyers find replacement cost higher than expected for frequent use.

Specifications

Our Verdict

The Bluelab PROBPHLEAP is a sensible, practical replacement probe for anyone using Bluelab meters who wants improved resistance to contamination and dependable pH readings across water and grow media. It represents good value for users who need accurate, repeatable measurements and prefer the convenience of a ready-to-use kit, though buyers who need the longest possible service life should budget for eventual replacement.

Frequently Asked Questions

Will this probe fit my meter?
It is designed for use with Bluelab Combo Meter, Bluelab Combo Meter Plus and Bluelab Multimedia pH Meter and connects via the supplied BNC connector.

Can it be used in soil and hydroponic solution?
Yes, the probe measures pH in both solution and media such as coco coir and rockwool for broad grower use.

What maintenance is required?
Keep the storage cap with KCl solution when not in use, rinse and gently clean as needed, and recalibrate periodically for best accuracy.