Bluelab pH Soil Pen - Waterproof Digital pH Meter Plantmax Seamless transitions between plant growth

Seamless transitions between plant growth phases

With its 360-degree free rotation capability

One Nutrient Mix

Growing in less fertile soil its recommended to use more frequently

In hydroponics

Bluelab pH Soil Pen - Waterproof Digital pH Meter Plantmax Seamless transitions between plant growthProfessional 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