I have been at this house for 33 years with a pool, and while I maintained Chlorine levels (mostly), I never really paid much attention to PH levels until this year where I am religiously following TFP. In those years my pool tile have become severely caked with calcium (PH too high I think). I could not find anything to fix the issue until this year I got some paint scraper discs to use with my battery impact drive and after a ton of elbow grease and 10 days of labor got it all removed. Well mostly, but 90% better, and wife is amazed at the difference. Now, I will keep the PH in balance, but is there anything I should be putting on the tile to keep them clean or any other recommendations going forward?