Adjust TA first, right?

[jnorris]

I would add a lb. of baking soda at a time. Add it slowly to the skimmer while the pump is running. Don't need to predissolve it. Wait a few hours to let it circulate before retesting. I'd aim for an alk reading of 100. How high is your ph?

PH is 7.8 to 8.0ish.

I'm going to do as you said. You haven't steered me wrong so far!

[cruzmisl]

You should end up putting about 8lbs of baking soda in (if your pool size and TA readings are correct)

Hope that helps.
Joe

[Watermom]

That may very well be true, but I have found with baking soda, it doesn't always take as much as the bleach calc suggests, so I tend to add slowly rather than overshoot the target. Especially since she is already close to the desired range already.