When you silicone the repair glass, apply the silicone in wavey lines to get full coverage. It will spread and make a uniform layer when you apply pressure. Swipe around the edges with your finger while the silicone is still fluid. This type of repair absolutely works on bottom panels only. If done properly, it will not fail. Put a weight on the repair glass to ensure a good bond with no air bubbles. You really only need one panel on the inside of the tank. The one you plan to add underneath is not necessary.
When you silicone the repair glass, apply the silicone in wavey lines to get full coverage. It will spread and make a uniform layer when you apply pressure. Swipe around the edges with your finger while the silicone is still fluid. This type of repair absolutely works on bottom panels only. If done properly, it will not fail. Put a weight on the repair glass to ensure a good bond with no air bubbles. You really only need one panel on the inside of the tank. The one you plan to add underneath is not necessary.
My tank did the same thing cracked at the bottom trying to clean it about the same size too I watched a YouTube video on how to repair it I'm gonna try it soon thanks for the input hope I succed