Where is my chlorine going?

[Watermom]

With a cya level of 45, letting your chlorine level drop to 1-2 is not adequate to keep algae away. You have to maintain the cl between 3-6 all the time. If you let it drop below that, it is an open invitation to algae. I would shock it back up just to make sure that something isn't starting as a result of the low cl you have had.

[vanman2501]

Your right my chlorine is too low but after shocking it the chlorine was dropping to 0 and now it drops to 1 & 2 so for me that's a big improvement. This morning it any dropped to 3 so it's getting better. I still don't what is causing the large chlorine consumption but it does seem to be getting better. at this rate it should be holding a good number by the end of the season. So far I have used three times the chlorine I used all last year.

vanman250