blue legged hermit crabs

[1bigstud]

Thanks for the replies.
Ive inherited a bit of hair algae, and am starting to get some build up on my rocks.
right now im able to blow the rocks clean, but was wondering if anyone had any suggestions thay would be safe With tje stuff in my tank.

[1bigstud]

Not a build of algae, but dirt. Actually ive been able to yank most of the hair algae out on my last water change, however a few stubborn spots that have really hunkered in.