Hello. Thanks for the replies. I have an pond pump we aren't using, I just hadn't thought of it lol I have never built anything with glass and silicone, so this is my first project. I am planning on drilling it so I can hide the sump. I have been looking for plans online, but they are for bigger tanks. I also have a 10 gallon I can make a sump, what do you guys think I should do? Also, what other equipment do I need? I already have the tubing, the tank, and am getting glass soon, and filter media, but do I need pvc or anything?