Niki
Aquarium Advice Freak
So I just bought a new decoration for my tank that is used. It looked like it was black and naturally colored. But upon closer inspection it looks like black algae. I have scrubbed it down multiple times but it's still there.
How do I make sure it is all gone before I can assume it is safe for my tank?
How do I make sure it is all gone before I can assume it is safe for my tank?