Evolution CO2 Control Unit Media works alongside traditional timers and

works alongside traditional timers and contactors

but this formulation is built specifically for indoor grower protocols and the lights-on safety angle is a genuine convenience

Micro NPK (for reference): approximately 5-0-1

but no speed controller required

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

Evolution CO2 Control Unit Media works alongside traditional timers 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