We have a 29,000 gal vinyl pool with a SWG. I've been reading the Chemistry for SWG pools in the pool school forum, and I see a recommended level of CYA to be between 60 and 80. I currently have a level of 35. My cell output is set to 30%. FC has always been between 3 and 3.5 with this setting. Am I really looking for trouble by not raising the CYA when everything seems to be OK at these levels? Acid demand was about 1/2 gal week, but that seems to have dropped off. Also TA is now about 60. Am I headed for trouble?