Really don't know where to post this, but I'll post here. I have a 40g breeder display tank with 40g breeder sump which holds roughly 35 gallons. I have a mixed reef in the tank. I wanted to buy a dwarf lionfish and a leaf fish. Both very venomous fish and just wanted to do a FOWLR tank. Should I do bare bottom or shallow sand bed. I want to plumb them into my current system. If I do this, will it cause a mini cycle into the current system? I will add only 1 fish at a time.
