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Live rock/sand added on 6/19. 10 days later, water tests show: Ammonia - 0; Nitrites - 0; Nitrates 60 ppm, pH - 7.2; 1.022 sg; and a consistent temperature of 77 degrees. Is the brown stuff on the small live rock pieces toward the front of the tank hairy algae (or whatever it's called)? Or, is it just brown algae? Bottom line, is it good stuff or bad? If bad, how do I get rid of it? Now what? Do I perform a partial (25%) water change? If so, can I add some snails and crabs the day of/before the water change? After the WC, then what? Thanks to all of you reef gurus who take the time to guide us beginners! Linda

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