I'm not sure if i'm having a problem or not? I have a few species of sponge that have come on my LR, however, the one seems to be growing at a supersonic rate. I've noticed that the sponge has grown my LR together forming a wall, also the sponge has made a 3 inch ledge below one of my LR platform/overhangs.... can sponge reach plague proportions? any type of fish or invert that can widdle it down for me? suggestions please TIA