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  1. General Reef Discussion
    I have a 55 gallon tank. With a total of 40 gallons of water. approx 60lbs live rock. My calcium is at 360. My LFS sold me some Tropic Marin Bio-Calcium... Directions say 1 scoop increases calcium 29ppm in 5 gallons of water. Then says put no more that 1 scoop per 5 gallons. To me that says 8...
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