I've detailed my TA/pH cycle here: http://www.poolforum.com/pf2/showthread.php?t=6983 - second post. Mostly, I'm trying to keep my TA at 80 and my pH at 7.5-7.8.

Yesterday's numbers:

pH 7.5+
TA 60

FC 13.0 (coming down from a shock)
CC 0
CH 250
CYA 45-50
Salt 3600
Water temp 75

This is the time I'd normally add baking soda in 2 doses over 2 days to raise my TA to 80. But when I do, my pH slides right on up to 7.8 or higher, necessitating acid which drops my TA again.

With the full picture, does it still seem OK to let my TA settle in at 60?

I have a waterfall that's on 8 hours/day, same as pump time right now. SWCG is at 40%. Borates are not an option for me at this time.

Thanks for any opinions.