is the brace siliconed in place. I tried doing this with my 110gal fw setup last summer. I set the tank up on my cinderblock stand and siliconed in a piece of pretty thick glass. I then let it sit for a few days and filled the tank all the way up. When I woke up the following morning the brace was at the bottom of the tank ....I didn't really think that one through because I read so many threads about using glass as a brace I didn't realize the that tank walls would expand once the aquarium was filled with water. I didn't have any other options so I just found a spare piece of think glass in my basement, layed it in the middle of the tank..and its now a brace to hold up the glass lids for my lights to sit on...this brace doesn't support the walls of the tank at all and I've had it set up for almost 8 months now. Should I be concerned?