chlorine disapearing

[vinper]

Yes added through skimmer,will backwash tonight.. Shock to 25ppm that's like 7 or 8 gallons of bleach?

[aylad]

In 18K gallons, each 1.5 gallons of 6% bleach will raise your FC by 5 ppm, so if you're starting at zero chlorine, then 8 gallons should get you over the 25 ppm mark with a little bit to spare.

Make sure you have some extra bleach on hand, though, because once you get it up to 25 ppm, you need to hold it there by testing and adding as many times a day as you can to keep it at or over the 25 ppm mark.

Janet

[vinper]

wow think I will be scared to swim in that much ,If i do better wear somthing white

[aylad]

Don't swim in it until the shocking process is over and you've let the chlorine drift back down to the 8-15 mark. At that point, chlorine at 8-15 with CYA over 100 has no more ill effects than chlorine of 1-3 with no CYA.

Janet

[vinper]

I added 8 gallons last night . I think I saw a dillution recipe.. so I can use my test kit that only goes to 5 FC......Until I can get a new one

[CarlD]

Use steam distilled water. I like a shot glass: one glass of distilled to one glass of pool water. Mix and test. Now if it reads "5" it's really 10.
Or use 2 glasses of distilled to one of pool: Now when it reads "5" it's 15.
3 glasses distilled: 20.

But it gets less accurate.

Or, if the water is much, MUCH darker yellow, it's probably well over 10. When it's orange I THINK it's around 20, and brown, around 30-35...but I am not certain.

Carl

[vinper]

Well a week later back too hardly any chlorine having to add 1 gallon of bleach a day ... CYA seemed to drop some to just under 100 . So shocked this morning with 8 gallons.....I got the drop test kit now which is alittle more difficult to use