chlorine chemistry

This is my third year as a pool owner, I have never had an issue with any cloudiness or chemical balancing issues until now. I am at a loss for what to do now so hopefully someone can give some idea of what is going on. The pool is an 38,000 inground vinyl liner. I opened the pool a week ago...

Hey everyone, I'm a relatively new pool owner (9 months) and have a 14,500gal in-ground pool/spa. I've never had any issues with my chemical levels (tested weekly) until I recently started seeing mustard algae growth after a few birthday pool parties (in September and October). My kids also...

I had noticed that it seemed like my chlorine production was decreasing. It was summer and the outdoor temperature had been creeping up so I bumped up the duty cycle from 30% to 50%. I'm in coastal SoCal and I have a vinyl cover that is on most of the time so I get away with running only about...

Is there ever a need to change the water jn your pool? Does it get “stale” even though it remains perfectly clear and sanitized with proper Ph? I test daily with a TF-100 kit and haven’t had any sanitizer issue, calcium build up, Ph oscillations etc., the pool has looked perfect for the five...

Hey, I'm Karen, Just getting started here on this site and have been reading for hours. My husband and I have had a pool for a few years now, and up until now, have almost always been able to keep it pretty. It has turned green this time, and through this site have learned that thr reason why...

I just bought a chlorine tank that I filled with commercial bleach. The tank was clean and brand new when I filled it, however now that I've dispensed all the chlorine, I've noticed this brown and black sediment at the bottom of the tank. Is this a normal biproduct of bleach instability? Or...