It's 99% either a sponge or an algae. If it's a sponge it should 'give' when you touch it and feel 'spongy'. When you peel it off what does it look like? Can you see small holes in it or is it solid?
Web Member
It's 99% either a sponge or an algae. If it's a sponge it should 'give' when you touch it and feel 'spongy'. When you peel it off what does it look like? Can you see small holes in it or is it solid?
30 Gallon reef, 220 gallon South American Cichlid tank.
Posting Permissions
Reply With Quote