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 i have a 67 gallon tank with about 74 pounds of fiji live rock.  fluval 405 filter.  Tank is only 3 weeks old.  i have 2 clowns which have been in there for over 1 week and look good.  I added a regal tang yesterday and all seems good just want to clear the water if possible.
 ammonia - 0
 nitrites - 0
 nitrates - 0
 temp -78-79
 alkalinity - 230 ppm
 ph - 8.3
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