Messing with the SWG now, but water looks/feels/smells great. Sitting at FC-10 CC-0 now, so will test/adjust PH this weekend and likely need to bring CYA up 20, being that the decision was made to stay with salt. One last thing concerning the appearance of small "cracks" in plaster, many of which have hard, cement looking calcification bumps on them. Last year I figured it was calcium leaching, but with CH at 400 wouldn't think so? Maybe just normal aging of plaster?