Quote:
Originally Posted by Myka
I think it's the Hanna Checker. What other salt do you have around? Maybe mix up some IO (since it has lower calcium) and see if you can get the proper reading from it.
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I don't have any other salt, used it all up before starting with the AF. I used a Salifert test kit on the tank and a new batch of water. For the tank the color started changing at 430 and went fully blue at 440. The newly mixed salt only came out at 400, I did the test twice and got the exact same result. So the AF isn't high on calcium and will require dosing in a few days.