In addition to our custom benches, we also sell the ebb and flow trays separately. These can be used as replacement trays in existing benches, or to convert other existing benches into modern Ebb and Flow sub irrigation benches. The polystyrene bench trays are molded with a network of drainage channels that serve several purposes. First, as the bench tray is flooding, they allow the water to flow evenly throughout the entire surface of the bench tray and rise simultaneously over the entire bench surface, watering all plants on the bench evenly.
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