Evolution CO2 Control Unit Media It's built around phosphorus and

It's built around phosphorus and potassium plus L-amino acids

but no speed controller required

works alongside traditional timers and contactors

Top-tier efficiency

Knowing what's actually happening in your tent overnight is half the battle with VPD and mould prevention

Evolution CO2 Control Unit Media It's built around phosphorus andEvolution CO2 Control Unit It is the ultimate solution for bottled CO2. The Evolution monitors CO2 levels within the grow room and constantly adjusts the amount of CO2 to maintain ideal conditions for optimal plant growth. PPM (parts per million) levels can be easily set on the controller to suit various growing conditions. We recommend around 1000 1200 ppm for optimum results. This unit is also compatible with the Evolution Digital Fan Speed