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I have a 60 gal reef tank and I can't get the calcium level below 640ppm. My ph is between 8.4 and 8.6, no amonia, or nitrites, nitrate a tad high. Is there anything on the market to reduce calcium or is it not high enough to worry about. Thanks for your input:grumble:

Hello, I am new to the foram and I have a question I hope someone can answer. I have many fin hair like red worms in my substrate and on the glass. The only thing in the tank is several peices of live rock and two Damsels. These worms have only showed up in the last 3 months although I have...