Where Has All The Chlorine Gone? Out by....

[donaldm823]

Hey folks,

Going a little nuts here. All my chlorine is diminishing to almost 0 level over night. I'll put in two (or even four) of those big 2 gallon jugs of Ultra Bleach in the evening and raise it to between 5 and 10 ppm, and the next day, the chlorine is down to .25. I run the pump and/or the dolphin to mix the water too.

It's only been happening for a week now. At the beginning of the week, I had minor algae, but that's all gone and my pool looks fantastic. All other levels are right where they should be including CYA.

Could it just be Sun that's doing it? It's really not all that sunny though. What other factors are there? Could it be getting stuck in the bag of the dolphin?

Thanks

I had the same problem last week, 2 days in a row chlorine went 0ppm with the water crystal clear. My fix was to shock the pool to 12ppm and run the pump/filter all night. Back press doubled overnight, meaning, something was in the the water that the shock took care of. I ended up shocking the pool a second time after the chlroine level got down to 5ppm due to CC being high after the shock. I surmise, you have something starting-need to get ahead of it by shocking

[mbar]

I second Don's opinion