Bluelab Replacement pH Probe are formed with an easy-to-clean

are formed with an easy-to-clean diagonal drainage grid to direct water toward drainage fittings

Use as a supplement with any fertilizer

Due to its size

houseplants

5 in round with a slit that allows easy insertion of a cutting

Bluelab Replacement pH Probe are formed with an easy-to-cleanThe Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your crops' daily nutrient requirements. Simple push button pH calibration. Successful pH calibration indicators. Low battery indicator. Over range and under range indicators. Display options available in degrees C and F, EC, CF, ppm