lol i was building a stand for a 20l i have laying around to put my fw fish in from my 23 gallon hex and i just remembered how much i love 20l's so ima see if i can drill this one and plumb a ten gallon sump under. any one have any recommendations for size pipe, return pump, or bulkheads for a 20g with a ten gallon sump? dang it i got back into reefing just wanting a 10 gallon now im planning a full blown build haha. the bug bit me all over again!