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Is green algea good or bad because my rock has a lot of green algea on it. Also I have a bunch of really small curly Q white things on the back. What are these things?
Hi, if you cal and alk are in check your rock will go from green to purple, mine went from emerald green to purple, if it comes off your rock by blowing it off with a turkey blaster then it's algae you don't want.