Originally Posted by Gatekeeper
Is that thing 4' long? Doesn't a 55 have a center brace? How are you getting that past the brace?
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When I laid out the branches, there is a thick "thumb-diameter" branch that runs across the middle (at a slight angle) that will be my guide to cut this in half. I'll cut right along the edge of the branch so it hides the seam. I'll use a snap-off razor knife to make the cut through the foam... no worries. The bottom edge of the background will be held back against the tank just by the pressure of the substrate up against it. Because the whole thing is foam, it will want to float up... hopefully the whole thing will jam itself snugly under the aquarium rim and stay put. I can use a couple of gobs of aquarium caulk if need be to secure it to the glass.