Bluelab Replacement pH Probe for Combo, Guardian and pH Controller Grow Tents This compact size ensures a

This compact size ensures a seamless fit in most setting

Each screen comes with hardware so you can easily mount your new screen

High flash point of 480 °F (249 °C) = enhanced safety and stability

This gauge is great for use with water systems

Allow adequate ventilation in all work areas — use in well-ventilated spaces or with local exhaust ventilation

Bluelab Replacement pH Probe for Combo, Guardian and pH Controller Grow Tents This compact size ensures aBluelab Replacement pH Probe: Durable & Accurate pH Measurement for Your Bluelab Devices Keep your Bluelab pH devices performing at their best with the Bluelab Replacement pH Probe! This durable and affordable probe is compatible with a range of Bluelab meters and controllers, providing accurate and reliable pH measurements for optimal plant growth. Why pH Matters for Plant Health: pH plays a critical role in nutrient availability. Plants can only