Is it a new tank and do you have a sandbed? I find a new tank with a sand bed has a verry high initial depleation rate which results in people trying to figure out why they can't keep Ca levels up. but now that lots of people are testing Mg this isn't as much of an issue.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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