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You can monitor conductivity
An excellent organic product
Compatible with all soil mixes and pre-fertilised potting substrates
Designed for use during propagation and the early vegetative stage
Buy Mills C4 now from GoGrow
G.A.S Intelligent Humidity Controller for SonicAir Pro – VPD & RH Control Control Freak You can monitor conductivityThe G. A. S Intelligent Humidity Controller for SonicAir Pro is designed exclusively for use with the G. A. S SonicAir Pro humidifier. It monitors your grow room environment and automatically controls humidity levels to either VPD (vapour pressure deficit) or relative humidity keeping your plants in the ideal conditions at every stage of growth. Humidity management is one of the most critical factors in a successful grow room. Too dry and plants