Shrooms take your reef tank to a new level! So useful, Moani Shrooms can be placed flat size down for stable pinnacles with plenty of nooks for frags both high and low. Or puzzle piece in your own aquarium rock bed on the bare glass tank bottom, fill the crevices with sand, and have a firm reef bottom on which to build. Turn them flat side up. and have a tree style platform with plenty of holes on top for easy frag placement. Use multiple Shrooms, and boost or drop to vary heights, and your reef becomes a dramatic, multi-level coral forest full of surface area while still maintaining nice open areas and good circulation patterns.