Quote:
Originally Posted by Borderjumper
I sure would feel much better if I could pinpoint the cause.
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That's tough. Lots of people use foam, and lots use wave makers. The foam theory does make sense though. How much compression was there? Enough to force the contact between glass and foam? Thinking back, my 155 sat on a framed stand, no solid top so foam only contacted the edges. I never sit my tanks on a flat surface, so foam would work fine for me.