Reading your whole thread again, I realized I somehow missed the bit about how old the water is and that you need a replastering job. Sometimes on my phone I scroll too fast. Sorry. Forget that question from the previous page. Get that pH down as CarlD suggested, also on previous page.

Here's a new one: Is the bromine canister called a bromine/chlorine feeder? Is it inline?

Do NOT add liquid chlorine/bleach to your skimmer as mentioned last year with any bromine tabs in that feeder.

Add your chlorine in the evening as the sun will burn a lot of it off during the day. Distribute it evenly around the pool or slowly in front of a return jet in the deep end.

Water that old (1997-2000) that has been treated with bromine can be rather risky. There is a compound called DMH that is used in producing the bromine tabs that never really goes away and just builds up over time. High levels in your pool can cause bad skin rashes.