I just bought a new 180 gal tank. I didn't get to inspect the tank real good where I picked it up from since they were kind of swamped, but I got home and noticed a 3-4" crack coming from one of the corners on the bottom. Now, I'm not totally panicking because the bottom is double layered and the crack looks to be only on the inside layer. My question is, what would you do in this situation? Should I feel comfortable using some strong silicone and moving on with life?