Richard, thanks much for the reply!

Ok let me answer some of your questions here...

Not sure how my CH got so high. I know that the water here in AZ is notorious for having high levels, but as I stated I tested the fill water and found it to be at 200. I don't normally use Hypo-Cal or anything like that, only liquid chlorine or liquid bleach. However, I did shock the pool when I last drained and refilled it some time ago with something the pool store gave me (it was a powder shock agent, and to be honest I don't know what it was ... it was prior to my "education" I've received here on this forum and I don't know what was in it).

I test my fill water for TA today, it is at 110. I also tested mine pool water's TA again today, and it seems to have gone up to 130. I will of course test it again in a few days to see if it continues to climb.

The intense summer sun is letting up here in AZ so I have just lowered by SWG output anyhow, I will likely lower it again soon. I didn't realize higher levels for shorted periods of time could cause the pH to rise. I will keep that in mind.

I also tested my CYA again today and it's around 65-70. It's possible it's just variance in the testing, but I have had my CYA drop before. Interesting because I had read on here somewhere that CYA levels should never go down unless you drain water from the pool. Is that true?

BTW you mentioned acceptable levels of TA in relation to pH. Is there a chart posted anywhere with these values? It would be nice to have...

Finally, is there a good way to get rid of the scaling that now exists around my water line?

Thanks again for your help!
Josh