TXPoolOwner82

Read this response by waterbear regarding Trichlor and CYA levels: http://www.poolspaforum.com/forum/index.php?showtopic=30118&st=0&p=132498entry132498 "For every 10 ppm FC added by trichlor you are also adding 6 ppm CYA." He also states that draining it is the only way to remedy the problem of high CYA levels.

I'm no expert, but according to my understanding, you should take care of your pH, TA, and CYA as best you can and then shock the hell out of it to obliterate all of the green stuff.

Leslie's recommends 2-4ppm FAC ( Question #2 under Water Balance Basics: http://www.lesliespool.com/faq.html#Water_02 ), and the label on their shock recommends that you not swim until the water is at 1.0-3.0 FAC. You might be inclined to blame this on the fact that they recommend 30-50 ppm CYA, and while that is a valid observation, online sources often suggest certain FAC levels, depending on CYA levels, and even in that range of CYA, they're still typically significantly higher (e.g. 3-6 ppm.) Why is this the case?

This test was done about a week after we refilled the pool (about a month ago), so my FAC should be higher now, and yet the pool has gotten progressively worse. It's not terrible, but is definitely a bit cloudy and green. FAC 1.5 ppm TAC 1.5 ppm pH 7.8 TA 100 ppm CYA 60 ppm Hardness 200 ppm Salt 3200 ppm Phosphates 200 ppb We're running the Jandy Stealth 2-spd pump 2.5 hours at high-speed and 6 hours in low-speed. (I plan on increasing the low-speed run time to 8 hours tomorrow.) The pool is 20k gallons. It seems to me that a bunch of minor problems (low FAC, slightly elevated pH, and high phosphates) are adding up to cause a significant problem, however, I am interested in any input or ideas. Please let me know what steps you all believe are most important for me to do.