10% sodium hyperchlorite

[dansdad]

Is 10% sodium hyperchlorite ok or does it need to be 12

[chem geek]

10% is fine. Even 8.25% or 6% bleach is fine if it is unscented and not "outdoor" or otherwise unusual in having thickeners in it. The only differences will be in the concentration. Sometimes bleach is more economical; other times chlorinating liquid is cheaper (per FC). Of course, the more concentrated product is less heavy to carry for the same amount of FC.

[Jason in Ky]

I am actually using 5.25% bleach and have had great success with it. So 10% should be fine.

[CarlD]

It doesn't matter. All that matters is that ultimately you get enough chlorine in the water.