so i've been doing a lot of reading about these concreted styrafoam aquarium backgrounds..i have a few questions..even with the foam concreted will the heater still melt the foam? 2 do you think it's possible to run holes in sections and hook up the air pump to it as to use the background as sort of it's own air stone?.....one more question...what's a good bottom feeder or algae eater to put in with african cichlids?