Can iron in the water cause the SWG to be less efficient? My SWG can't keep up with loss from the sun let alone swimmer load. Current numbers are: FC 5 CC 0 PH 7.6 TA 70 CH 270 CYA 75-80 SALT 4000 If I run 24hr a day at 100% it will maintain FC of 5 to 6. I am currently trying 12hr run time to see what I get. With my low swimmer load FC of 3 to 4 may be enough to get me through the next month or so until closing. The pool is at our current summer home, soon to be permanent home so I'm not here enough to supplement with bleach or I would. It's also very rural so I don't have anyone that I can trust to keep an eye on it when we're away. Currently I have Iron stains that I am treating with HASA Super stain out. It is working and has reduced the staining in just a couple of days significantly. I will do a full Ascorbic acid treatment in the spring too. then will look into ways to remove the Iron from the water (CuLator?). The real question is the Iron causing my SWG to be less efficient, or is my SWG just getting old and less efficient on its own. I cleaned it per the mfr instructions, and clearly working to some degree but just not keeping up. If Iron is a problem for SWG what is the solution? Or am I just shopping for a replacement SWG over the off season? Thanks to all in advance everyone has been helpful in getting me through my first and then 2nd SLAM your advice has been spot on! Bob