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#5
01-07-2009, 04:24 PM
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Yes the purple stuff growing on your rock is Coraline Algae.
As for your increase in salintiy it is due to the evaporation occuring in your tank. The less open spots in the tank top the less you should see in evaporation. Ideally you want to keep you salinity level as constant as possible, with many reefers on here keeping their tanks at 1.023 to 1.026. I keep mine at 1.025. You can look at a auto top off unit if you find that the salinity level is fluctuating to much, or add some water in the morning and then in the night as needed (remember top off water is water that has no salt in it).
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RSM 250. Clownfish, Fox face, Blue tang, Yellow tang, Kole tang, Clown tang, Coral beauty angel, French Angel, splendid dottyback. CUC, softies, lps, sps. 
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