I coated it first with epoxy and then laid 2 layers of 1708 on it for the new tank bed. It does flex a little bit I assume that's the glass flexing as it would be considered a finish glass. Am I correct on this? I will get some heavier mat to tab it in better since most of the weight of the tank rest on the outside edges of the bed. This tank holds 165 gallons so making sure it doesn't crash thru is important.
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