Hi Elsie

As I was reading your post, the thought that "the cya is gone" popped up a couple times -- I AM CERTAINLY not anywhere near as knowledgeable as chem_geek nor waterbear, but, IF memory hasn't failed me - when the cya gets eaten by the dirt bacteria (?) the result is ammonia which causes a HUGE chlorine demand, and would exacerbate the loss of cl due to UV.

I can't say what net effect this would have on the pH, but something in the back of my mind is saying that it is also a result of having the cya consumed ??

With respect to TFP, IMHO, something HAD to be done when this site stopped accepting new members and Ben went MIA I've said it before and caught BS for it but, I will always!! call this site my first stop when I get home and can get online! I give Ben credit for advocating BBB and his 'debunking' of widespread pool industry practices, beliefs and 'general screwing of customers'!!!! Without this site, and Ben's unannounced departure, TFP wouldn't exist!

As Al said the other day, 'It's nice to see Pool Forum being active again!' As long as the site exists - I'll be here, the mods will be here (computer servers allowing ) and I would hope that all members will stop by from time to time - even if it's just to say "HI" and let the world know that PF is still an active site