Bluelab pH Pen

Check pH levels with a reliable Bluelab pH Pen.

This handheld meter helps you measure the pH and temperature of your nutrient water, giving you a clearer understanding of whether your reservoir is sitting in a suitable range for plant nutrient uptake.

Useful for home growers who want more accurate pH readings than test strips, especially when refreshing the reservoir, adjusting water conditions, or troubleshooting plant growth.