I am making a rimless 5.5 tank using the DIY method. I have an AGA 5.5 and already removed the top and bottom rims. I am now just cleaning off the excess silicone. My question is once I clean off the excess silicone including the silicone on the bottom of the tank, is there any precautions I should take when setting up the tank? I heard some people place the tank on a mat or something like that? Do you need something under it? I am going to place the tank on an end table in my bedroom where I had my old 5.5 running. I am going to test fill it in the garage first to see if it holds initially with no leaks. Does a 5.5 really need the rims to stay together? They seem pretty flimsy and useless anyway but I could be wrong. Anyone else have luck with a 5.5 diy rimless?