When placing a rimless or trimless tank on a stand, counter top or shelf, any little imperfections on the surface can cause issues with the glass resting directly on it making a stress spot. Mr. Aqua recommends using a foam mat to protect the bottom of the tank from stress. We offer different sizes depending on the size tank you need to protect.
All sheets are 0.25" thick
Edges aren't straight By Vince on 3/29/2016Vince wouldn't recommend this product to a friendThis 12" x 12" mat is actually 11.75" x 11.75", probably made for 30 cm cube tanks. Also, the four corners are very slightly tapered or more narrow. You're better off buying a larger size and cutting it yourself.
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