I know this has been asked and answered before, but I could not find a solid answer. If the wood i'm using does mold up can the mold be stopped inside the tank still? Lets say with isopods? or something of the sort. IF mold starts to grow on the top of the branch i'm using will the isopods climb up the branch and eat the mold? Any advise would really help me out. Also will the mold harm my frogs at all?