So my tank's PH suddenly dropped from 8.1-2 to 7.7 in the span of about 24 hours, I just did a water change to raise it to 7.9 but my acros and hammers are in serious trouble. They have all lost the skin that has light hitting it (though the polyps themselves, and shaded skin, is still there) and I'm really terrified that I'm going to lose a lot of stuff. I can't get to the store for a while, so is there anything I can do with at-home stuff? Would general dosing help, or could I use baking soda? Help me out here, my tank just got to it's cruise control state and I really don't want to lose it.