Quote Originally Posted by CarlD
You may get some scaling.
I've not noticed any at all, but will keep an eye on it.

Please look at Ben's method for lowering Alk. I think keeping pH that high is a bad idea--it drastically lowers chlorine's effectiveness.

Basically, you lower pH to 7.2 or less, which pulls down the alk, then you AERATE to raise the pH. Repeat the process until Alk is where you want it. Then use Borax to raise the pH to the desired level.
I've looked at that so many times I think I can probably recite it I'm familiar with the process, have done it several times, and frankly am tired of doing it. With such a high starting Alk, by the time I get it down it's time to add more water and the whole process starts all over again.

The elevated PH and reduced chlorine effectiveness is my main concern, but in Ben's "run a high PH pool" page, I get the feeling I may actually be ok, provided I stay ahead of my pool. I'd just feel more comfortable doing so if I knew what the risks of high Alk were.