My calc levels are 700 I set up the tank 2 months ago and have been adding kent liquid calc daily I only got the nutrafin test kit yesterday and am panicing The tank pH is 8.3 and the alkalinity "high" on a red sed test kit. I did the test twice to make sure. and am going to do a 10%water change this evening and other tips and is all the live stock in danger it does not seem to be bad/ill. and I have had no precipitate in the water I am obiously not going to add any more calc for the next few days