Minkota
Aquarium Advice Activist
I have a 150g FOWLR Tank and it has been fallow for the last few months and I just put my first fish (lion fish) in about 2 weeks ago and within the past few days I've noticed a dark red algae growing it kinda has a velvet look to it. It is only on the rocks not on the sand or glass. Is it a type of Cyno or some type of carpet algae, good or bad?