Not the algae I'm not sure what kind it is but it seems pretty harmless plus it gives me a reason to keep my turbo snails I'm talking about the little bug looking thing on the rock
I think I see what he's talking about bang guy. Top half of the photo, just a tad to the right from center. Is that a sponge? Its got a touch of purple on it. Maybe a snail?
I guess it would have helped if I cleaned my glass but yeah that's what I'm talking about andiit's not a sponge it looks like it has a shell but it's definitely not a snail I only have 4 turbos and they've all be accounted for.