What is Flood & Drain?
Sometimes known as ebb & flow, flood & drain systems periodically flood the entire root zone with nutrient solution before it dries out. This is done with a timer on a pump from a main nutrient tank usually located directly below the flood tray. The root zone is flooded for short periods of time (between 10-15 minutes). The interval between floods will depend on plant size and medium used (rockwool or expanded clay pebbles).
