I have a weird growth on a zoo rock that I bought
dburr Active Member Mar 8, 2005 #2 Looks like a type of sponge, I have them, but under the rocks not on top if it's the same thing.
D dubbin1 Guest Mar 8, 2005 #5 If you don't want the sponge on there you can pull the rock out of the water for a couple of minuets and let some air get to the sponge to kill it. The zoos will be fine out of the water for that short of time.
If you don't want the sponge on there you can pull the rock out of the water for a couple of minuets and let some air get to the sponge to kill it. The zoos will be fine out of the water for that short of time.