Bluelab pH Soil Pen - Waterproof Digital pH Meter Plantmax We recommend that you set

We recommend that you set your flow rate at 10 SFCH (Standard Cubic Feet per Hour)

Soluble Potash (K2O) - 35%

Growing in less fertile soil its recommended to use more frequently

Working Environment:                 Temperature 32-122°F

The exterior accepts slip-fit PVC pipe for clean

Bluelab pH Soil Pen - Waterproof Digital pH Meter Plantmax We recommend that you setProfessional pH Testing for Soil and Growing Media The Bluelab pH Soil Pen is a rugged, fully waterproof digital pH meter designed specifically for growers. Get accurate pH and temperature readings in soil, coco coir, potting mixes, and nutrient solutions with this versatile, professional grade pen. Why Choose the Bluelab pH Soil Pen Fully Waterproof: Not just water resistant built to withstand deep water plunges and harsh grow room conditions