Ebb and Flow Fittings are for you hydroponic system. Choose a size of drain bottom (1/2in, 3/4in or 1in hose fitting). Then add a screen top for your feeder line.

In order to have an overflow drain choose the detachable screen with 3in high overflow riser to accompany your choice of drain bottom.

The optional risers are available if you require a higher clearance.