I have been battling TA also, so I have been going the slow and easy approach been lowering it 7.0 or 7.2 with Miuratic acid and in a few days it gets back up to 7.5 or 7.8 then I repeat the process, with each cycle I have been getting my TA to lower about 20 pts. Currently I am at 190, 2 or 3...