Bluelab pH Controller Root Innoculant See attached image for a

See attached image for a detailed example

This unique design make the ROI-E420 great for a 3'x3' to 4'x4' footprint

Adjust pH value of the final nutrient solution between 5

Mycorrhizal fungi are included to help increase root efficiency

Bluelab pH Controller Root Innoculant See attached image for aHands free monitoring and dosing of solution pH levels. Our clever pH controller automatically monitors and fine tunes the pH levels for you. You simply set it and forget. The pH is taken care of. For use with reservoirs up to 200 US gal 760 L. Plant safe green backlit LCD with adjustable brightness and large, easy to read display. Easy to navigate menu to program, adjust settings and calibrate by a simple push of a button. Flashing high low alarm