Brain and Timer Unit - Flood & Drain Pro Remote Nutrients by Brand/Additives/Rambridge Water pump power - 1

Water pump power - 1

If the probe face is dirty or contaminated

this controller can also be used with either bottled CO2 gas or with a propane or natural gas burning CO2 generator

As a bonus

Master controller EL1 & EL2 Gen 2

Brain and Timer Unit - Flood & Drain Pro Remote Nutrients by Brand/Additives/Rambridge Water pump power - 1The IWS Pro Flood and Drain Brain is the bigger brother of the regular IWS flood and drain system, the main advantage of the pro version over the regular is the fatser draining time. With faster draining and filling you gain better control of your feeding times and avoid leaving your roots submerged in nutrient solution for longer than necessary. Fitted with 2 Maxijet 1000 water pumps and 2 valves. Note: this unit needs the IWS Flood & Drain Minute