Test results on new pool in Tucson

[SunnyOptimism]

My cya is 100-110, previous owners probably relied on tricolor pucks it would seem. Was going to see if it went down over winter. I have a pebble tec pool with multicolored tiles on rim. Horrible scaling build up. I have used pumice ( go through it way too fast), de scaler spray ( not a chance) paint scraper ( lots of forearm fAtigue) and recently a chisel and hammer ( use correct angle to avoid tile chipping). Really looks like hell. Any thoughts?

Your CYA is only going to "naturally" decrease VERY slowly, ~2-3ppm/month at best during the winter. My suggestion, if you want to reach a lower level faster, is to drain and refill. Taking you water level down by 25-30% would put you in a much more manageable range. Just my opinion, as others feel 100ppm is OK to run at since you'll just use more bleach that way.

As for scale, Arizona Bead Blasters (http://www.arizonabeadblasting.com/) used to service Tucson. I'm not sure if they do anymore. Salt blasting calcium deposits is the better way to go. If the process is tuned right, you blow away all the Ca scale without any damage to tile or PebbleTec. It costs money, but unless you have your own salt blasting equipment, it might be worth saving you arms the trouble. Pumice stone will definitely scratch your tile surface and won't help at all on the PebbleTec or rock surfaces. Diluted muriatic acid can help a bit but you'd better wear gloves and face gear to protect yourself.