Roots Organics Phos Rock Size:55 lb Steady supply of CO2 for

Steady supply of CO2 for 6 months guaranteed

and 10" plastic pots are designed specifically to snugly fit on standard 3

Calibration:  Factory calibrated (no additional calibration required)

Whats included:

SUPERthrive now includes kelp

Roots Organics Phos Rock Size:55 lb Steady supply of CO2 forDERIVED FROM Phosphate Rock Roots Organics Phos Rock is an excellent source of phosphorus and calcium. Carefully processed and sifted to make it easy to work with, Roots Organics Phos Rock encourages vigorous flowering and fruiting. All of the Roots Organics phos rocks have been sourced for quality and harvested with bat friendly methods so you and your garden get performance with principles.