The drop doesn't seem all that bad if it's really only 0.3 in a week. One thing to not is that it says you are testing after a water change. It's always good to test before and after to ensure you don't get a low Alk batch of salt. Do you test the Alk of the salt after mixing prior to the water change? The Monti caps really suck up the chems once they start accelerating their growth as well
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