drain fixture in the bottom floor

[dfringu]

Does anyone know of tank designs w/ a drain fixture in the bottom floor panel. It would be kind of like a floor drain in a pool? Of course the drain design would take substrates into account or eliminate them. The drain could be used for bottom settling cleaning or on going ware filtration ?

Has this been done ? If so by whom? If not why ?

[jeff@zina.com]

Common in many freshwater breeding operations with bare bottom tanks.

Jeff

[dfringu]

what about for saltwater ?