Bluelab Combo Meter Plus Light Controller Also contains beneficial mycorrhizal fungi:

Also contains beneficial mycorrhizal fungi: Funneliformis mosseae

Contains 54%

Optimized wool structure allows for faster rooting-in and nutrient solution replenishment

This high quality 55-gallon drum is black in color and comes with a solid cover and bolt ring closure

EPA 25(b) Exempt product with proven safe ingredients

Bluelab Combo Meter Plus Light Controller Also contains beneficial mycorrhizal fungi:The Bluelab Combo Meter Plus is an all in one, convenient portable solution for accurate measurement of pH, conductivity and temperature in nutrient solution. The battery powered, lightweight unit can be used anywhere, anytime to measure critical parameters related to nutrient uptake in plants. The Bluelab Leap pH probe also allows fast and accurate pH measurements direct from the root zone in a wide range of growing media including soil, rockwool,