No Chlorine at all in pool...

For reference, in your pool, each gallon of 6% bleach will add 2.6ppm of chlorine and each gallon of 10% will add about 4.3ppm.

Let's do an overnight test on your pool. Go ahead and add both of the gallons of 10% this evening. Wait an hour or so and then test your chlorine. Then, in the morning within 2 hours of sunrise, check the chlorine again. See how much you lose overnight. If you lose more than 1ppm, then you should continue to try and keep the chlorine at shock level which for your pool with CYA of 40 would be 15ppm of chlorine.

When you get to the point where you are not losing more than 1ppm of chlorine overnight and you have no more than 0.5ppm of CC and your water is clear, then I would suggest keeping the chlorine high for one additional day for added insurance and then you can let it drift down. Then, keep it between 3-6 all the time. If you dip lower, you risk problems.

So far so good. We finally all went swimming yesterday! Except the 1 year old she napped for 3 hours! My 4 year old daughter won the award for first one in for this year. My 3 year old son played on the 1st and 2nd steps. It takes him a few pool outing to get goin.

I've been maintaining FC levels at around 3-6. I've been pouring 96oz in every other day or 2. I raided the supermarket and have store brand ultra bleach reg scent on hand. Pool water looks fantastic.

Thanks again for all your help and teachings. I will not be listening to pool stores anymore. I look forward to helping and sharing my knowledge and experiences.

Thanks

Mark

Thanks. We don't get to hear the end story, nearly as often as we'd like.