25,750 ga 18x36 Rectangle IG Vinyl liner; Hayward 250 sand filter; 1.5 hp pump. PF=4.4
Only test once. Then, add a dose that will take you up to where you need it. (Doses are based on your volume.) Remember that your range for needed chlorine is based on your CYA reading so what StraightLeg needs in his pool may not be what level you need for your pool. (I can't remember what your CYA reading is, Tom.)
For example, in Tom.B's pool, each 121 oz jug of 8.25% bleach will add about 3ppm of chlorine and each quart will add 1ppm.
In StraightLeg's pool, each 121 oz jug will add just slightly under 3ppm. (You both have nearly the same volume.)
Here is a bleach calculator that you may be interested in. http://pool9.net/bleach/. It actually is more than a bleach calculator. There is a drop-down in the upper left corner with other calculators you can use.
Ok
I tested this morning. It has been 36 hours since I put anything in.
fc 5.0
c 0
ph 7.8
I think I will start with 1/2 a jug of bleach tonight. Will test first to see how far it dropped in 48 hours. Will report findings before and after the 1/2 of jug.
If not high enough then will add the whole jug
SL
48 hours since I added anything.
fc 3
Just added 1/2 gallon will wait an hour and retest
SL
Retested
fc 5.5
So this test for me.
2 days of no chemicals. FC dropped 5.5 ppm. I also got 1 1/2 inches water added to pool height from rain, it also was running over the skimmer top.
After 2 days added 1/2 gallon of bleach, it took it up 2.5 ppm.
So as of now I am thinking I will have to add 1/2 a jug of bleach daily to maintain my levels.
Can I get some response on what other people do daily with my size pool. Does this sound right?
Just got my new pump in the mail. 2 speed. Will see how much water it turns over and set it to a timer to turn my water over once daily. Does this also sound like the right plan.
Water very clear at the moment...
Thanks
SL
Typically not. But, test it once every month or 6 wks or so and you'll be able to tell if it needs any added. Your pool looks nice!
22'x40' Grecian Lazy L 20K gal IG vinyl pool; Aqua Rite SWCG T15 cell; Hayward Pro Grid 6020 DE filter; Hayward Superpump 1hp pump; 12 hrs; Taylor K-2006; city; PF:6
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