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Originally Posted by pocilipora
I always thought putting foam under a tank wasnt a good idea. If it gets compressed enough, the weight of the tank is spread across the entire bottom pane of glass instead of just around the edges. I think there is some good info if you do a search on RC.
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if you look at pressure it has an amazing property.. at any given depth the pressure is the same in all directions. the side walls do not hold the weight of the tank as the weight of the tank is the greatest at the bottom. this means in a 24" tank the force acting on any point that is the same depth is the same. so suporting the whole bottom fully only makes sence. however the problem comes in if you don't make your table flat you can get a high spot in the middle which will crack your tank. enter foam this will compress in some areas and spread the force out over its surface allowing iregularities to be adsorbed and the result is a flat true surrface, but even foam will have its limitations so we must get the base as flat and true as possable also.
Steve
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