Urgent Tank Overflow and Parameter Swing

Somehow my tank appears to be stable right now. Unless I am missing something I am optimistic I caught this fast enough that I might get away largely unaffected. Time will tell I have no doubt. The PH has dropped. Not to where I want it but its down. The ALK is steady at 11. Calcium levels are acceptable 550. A little lower would be preferred. The SG I will continue to bring up over the course of a few days. I am filling my ATO and getting things back on track. Hopefully the tank will level out. The only corals I can see any visual affects on is my Frilly Gorg and RBTA. The RBTA is not open and is hiding under a rock along a shelf. His mouth isnt hanging open or anything so surely he will pull through. The Acro I am having issues with continues its normal state. It is still slowly but surely losing tissue from its tips. I am not totally sure what to do with it at this point other than to get things stable again. If I were to break off the tips again and then place superglue on the tips would this stop the tissue loss? Is there anything anybody can suggest other than a few daily water changes to bring salinity up? Thanks