Watermom,
Last night I poured in 1 gal of bleach. This morning there is yellow algea on the bottom of the pool.
I am using liquid bleach and tabs in a floater for my chlorine. I recently adjusted ph with muratic acid. I have tested my cya weekly and chlorine and ph daily but it just kept getting greener. I started the summer using the DE in my sand filter to clean out the gritty on the bottom. It worked. I am still using the DE. For cya I have only poured 1 gal of water conditioner (cya) in the pool. Here are my readings this morning: I have 32,000 gal in ground cement pool.
Using your chlorine chart - 13 ppm
ph - 7.8
hardness - could not get a reading no matter how much titrant I put in. The test water just turned light yellow
Alk - 80
CYA - 40
Thank you.

A tree fell on our house this morning and the electricity is going to be shut off. I will be offline for a while. But while still up I will watch for your answer.