My cycle has been done for about two weeks and ever since I've had this brown algae. I think it's diatom but I'm not positive. It is very easy to scrape off, but regrows and fills the 75 gal tank within a day. It looks like dust with a few strings attached. I have done many water changes, bought new lights and tons of snails/hermit crabs. This algae will not go away. I don't know what to do.:frustrat: I have an anemone in the tank so I cant just shut off the lights or anything. I've tried siphoning and I scrub the walls almost everyday. It's getting ridiculous. Please help me!!