I'm going to be starting up a new tank this summer. I was looking at adding a sump. I was thinking about a DIY sump. I have been looking around for plans and things. I didn't really find any I liked. The tank is going to be a 40G (36"x18x13). The reason I want the sump is to hide everything like the heater, skimmer and all that. Also to provide more water volume to my system. I have been pricing sumps and the ones I have seen are all over 100 bucks. I was just wondering how much a DIY could cost me. So if you made a sump i would appreciate an estimate on the cost and the dificulty of building one, or if you bought one how much it was and how good it works. I'm on a tight budget so I NEED to make the best buy for my buck. As always thanks for helping out!