Well I filled the pool 5 days ago, and I've successfully gone from TA = 300+ to TA = 100 and pH of 7.4 as of tonight. It required gradually adding 3 1/2 gallons of muriatic acid and aerating 24-7 for 5 days straight. But I'm there.

Does TA change a whole lot week-to-week, or should it be pretty stable now?