Bluelab Soil pH Pen Butter Grodan plugs have a uniform

Grodan plugs have a uniform density

All Vortex PRO-lite products come with a PRE-filter included

AKA Rattlesnake

Backlit LCD display

Bluelab Soil pH Pen Butter Grodan plugs have a uniformBluelab Soil pH Pen The Bluelab Soil pH Pen provides a pH and temperature reading of soils and media, so you know that the right nutrients will be made available to your plants. In soils or growing media, pH strongly influences the availability of the microorganisms to plants in the soil. Now you can closely monitor and adjust the pH levels to optimize plant health and performance. It will also measure solutions too Detailed description: Direct pH and