I have a 58 gallon oceanic show tank thank the bottom peice of glass got broke. It has a v-shaped crack from back to front all the way from edge to edge. I figured I can put a new peice of glass to patch the whole bottom. What thickness glass should I use? Should I use silicone as an adhesive? And should I coat the whole bottom( I know silicone needs to breath to dry and cure. The tank is actually brand new still has the factory corner guards and the $279 price tag on it (my neice thought it would be fun to drop rocks in it ) . Any advice would be greatly appreciated.