My first test last evening showed my FC as 2, CC 0, Ph 7.5. I added 8 cups bleach. Checked an hour or more later, FC 5.5, CC 0. I checked this morning and FC was 5, a drop of .5 overnight. CC 0, PH 7.5. I did leave the pump running all night.
Re: Chlorine drop ?
My first test last evening showed my FC as 2, CC 0, Ph 7.5. I added 8 cups bleach. Checked an hour or more later, FC 5.5, CC 0. I checked this morning and FC was 5, a drop of .5 overnight. CC 0, PH 7.5. I did leave the pump running all night.
17k gal 16' x 32' IG concrete bottom FG sides 1985 , Hayward Pro S244T sand filter , Hayward Super pump 1 HP 12 - 24 hrs , using 8.25% bleach, K-2006C kit. PF=7
Re: Chlorine drop ?
In this heat wave, a drop of .5 overnight is really nothing at all to worry about. I'm having similar drops in my FC from day to day, sometimes more. With a lot of sun, a lot of heat (my water's usually 90 deg or more), lots of use, I'm not surprised to be adding so much chlorine.
Watermom's advice about getting a higher FC level SHOULD in fact keep your water safe and sanitary even with the drops in FC.
BTW, I don't agree with the advice to only test CYA monthly. I prefer to test weekly. Buying a pint of CYA reagent online is easy and well worth it. During the week, I run an OTO and pH test daily--takes 2 minutes, and I usually use my old HTH 5-way drop kit in the blue box (I replaced all the reagents with the 6-way HTH drop kit--the only difference is they now call it 6-way--and don't give you the blue box!).
But every week I run the K-2006 tests (I use the old PS-233 Ben used to sell--with fresh reagents). I test:
FAS-DPD for FC and CC
pH
Total Alkalinity
CYA
Water Temp.
I log my results all summer.
Since I have a vinyl pool I only test CH once or twice a season.
Carl
Carl
Posting Permissions
Reply With Quote
