Flood and Drain, Ebb and Flow, whatever you call it, we have it here at HTG Supply. Ebb and Flow system work through periodically filling and draining planting sites, which saturates plant roots with water and adds moisture to substrates. By making use of closed loop systems, Ebb …and Flow conserves water and nutrients. Plants grow more robustly in hydroponic system and take less time to get from seed to harvest. HTG Supply carries several hydroponic system to meet the size and budget of your garden, shop today and get the hydro system you need to succeed.