Everyday my alk falls from 8-9 to 4-5. I have to add baking soda or a buffer to bring it back up. My calcium was stuck at 190-200, couldn't get it up to levels, but finally go it to 400 yesterday with calcium chloride. Now today its at 370. whenever I add calcium or baking soda, I get these white hard to remove streaks inside glass. Mag is 1400, ph is 8.2, I change water weekly with instant ocean reef crystals. Whats going on?
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