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Details IWS Flood and Drain System Product Details: The IWS kit is a completely auatomated flood and drain system that automatically feeds your plants from a main reservoir and is controlled by a a brain bucket and timer that gives you complete control over your flood and drain feeding regime. The IWS Flood and Drain System contains: Reservoir barrel with pumps Brain pot with timer Pots and stands All fittings and pipework The IWS Flood and Drain System is a very sophisticated hybrid ebb and flow system, which works by flooding from the bottom of each individual 10.3 litre pot. The system uses gravity to send water to the pots and only uses pumps to fill and drain the main 25 litre control bucket which has two quality magnetic float-switches mounted inside to control the power to the pumps in both the tank and the controller bucket. These floats control the flood level in the growing medium precisely to stop any over watering or flooding. As the water is forced through the buckets and growing media, it expels all the stale air in the media surrounding the root ball and replaces it with fresh oxygen as it drains away which gives your plants a great boost every time the system feeds.