My nitrates are still hanging at 15-20, so I have been thinking about doing a sump on this tank. Maybe. I think the Eshopps overflow box will do it for me, and a 40g breeder tank for the sump. (I believe that is the size of tank that fits my stand). But I wonder about the return? And when the electric goes out, should i be concerned about flooding my living room? I am just thinking out loud here, so any input is appreciated. I am just kicking around the idea right now....