Yet my results are the exact opposite of Tredge. Running at about 30ppm CYA, I just couldn't keep my 30K IG pool "stable" (Aquarite). Every time I had any type of high bather load or lots of rain or a New York pollen "storm", the pool would get cloudy.

Now I am running at about 60 ppm CYA (I wonder if anyone can read the test more accurately than a 10ppm swing) and I have been able to scale back the SWG from 60 to 50 to now running at 40%. Water is clear and I am at about 4ppm FC. The pool is much more stable, it just stays clear and nice. It is possible that my results come from finally clearing out any residual "gunk" from opening, but I'm inclined to think it is due to running at or close to the SWG instructions.

Plus, my PH seems rock solid at 7.4/7.6.