P.S. to smallpooldad,

If you are adding the Borates to get more buffering because the pH rises over time, then you will also want to lower the TA to reduce the amount of carbonate so you reduce the amount of carbon dioxide outgassing. If you go really low in TA (say, down to 60), then you will want to keep your pH up on the higher side around (above 7.5) or else increase your calcium hardness. Otherwise, you could get into a corrosive situation if your pH were to drop for some reason (by having the TA low, you will already be a bit on the corrosive side, but not enough to worry about).

I thought that your pH rise was cut back significantly from your lowering your TA already. Did the problem reoccur or did you just want some more pH buffering without having to increase the amount of acid you need to add? If you add Borates without lowering the TA, then you will reduce the rate of pH rise and the frequency of your adding acid, but the total amount of acid you add over time will still be the same.

P.S. to Dave,

smallpooldad had earlier tried lowering TA to reduce carbon dioxide outgassing (see this thread for more details) and I thought this was successful, but we'll see what he has to say.