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I am starting to see little green nodules forming on many of my rocks. I'm also noticing lots of very fine pale or white hairs on one. Are these buble algae and hair algae? And if I shouldn't add more clean up crew to the tank how do you control this until it's time, or is the point that you don't so there is ample food supply for the crew when they get here?
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But how can it be a closed system if there's a big opening in the back of my hood......
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