Thanks Waterbear,

Well I do have a leak that I cannot find, and I seem to be losing about 300 ppm salt per month which also suggests about 10% of my water over the same time. My sprinkler system fills up the pool 2X per week for now. This is more than evaporation since the salt PPM does not go up as the water level drops. It does drop as expected after topping up the water though.

As to rising PH with a SWCG pool, I thought it had to do with this:

NACL + 2H2O -> HOCL + NaOH + 2H2

(result is: hypochlorous acid + sodium hydroxide + hydrogen gas)

http://poolnerd.com/2007/03/29/salt-...ne-generators/

So the SWCG literally pours a strong base, sodium hydroxide into the pool. The pool folks selling a SWG will even argue that their SWG cells do not produce hydrogen gas, and that any gas bubbles in the return jets are the result of a plumbing leak.

Nice H2 bombs:
http://www.youtube.com/user/griffcre.../1/GJLiXCKts-o

So for now I have resorted to Tri-chlor pucks in my floaty to help keep the CYA more stable, and to take some of the burden off my SWCG.

I will get serious concerning the pool once the summer is over..

Jim