Quote:
Originally posted by siropa
I wonder if instead of foam if using something like thorite (hydraulic cement) would work. wouldn't have the float factor and it wouldn't have to be epoxy covered. plus it would be easier to push the sand/crushed coral into it because it wouldn't be pushed out.
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You could always use an epoxy with lots and lots of filler. You could make it very chunky if you wanted. Foam is the best way to fill the area up though.