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  • High Calcium....Help

    So we had to take down the tank and put it back up due to replacing our flooring. When we took down the tank we had to remove the foam back wall that had roughly 50lbs of live rock on it, not including the 75lbs we had in the tank. When we tested water today the alkalinity was 7.7 and calcium was over 500 (test only goes to 500).

    We generally keep our alkalnity at 9.3 and calcium at 420

    All of the corals look great. However, we just bought new fish, a yellow tang and seven green chromis, and one of the chromis died. We have had the chromis in the tank less than a day. Does anyone think that this is due to the high calcium?

    What is the best way to lower the calcium and raise the alkalinity? We just did a 30% water change and plan to do another 30% tomorrow. Thank you for any help!

  • #2
    test your water change water before changing the water. Adjust it as needed in your mixing container before it goes into the tank.

    but, doubt the chromis died from high calcium. If you moved everything around it could have caused an ammonia spike and pH drop, or the fish just was going to die no matter what tank it went into.

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    • #3
      Originally posted by GrizzlyMint View Post
      but, doubt the chromis died from high calcium. If you moved everything around it could have caused an ammonia spike and pH drop, or the fish just was going to die no matter what tank it went into.
      I agree.

      If you raise your Alk this will also lower your calcium.

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      • #4
        If your corals look great, I would not change a thing. Now if all your fish had issues, then you would want to investigate further and make gradual changes, but one unexplained small fish death should not warrant changing your water parameters imo.

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