My pool is too blue and brown stuff is settling on the bottom of pool. This was the 3rd day. I thought i killed this stuff off 2 weeks ago.
I notice the other day after a heavy bather load that the pool was very blue. I have the shock level at 20. cya is about 75 should i raise the fc? How long to you hold it there? How do you know the algae is dead?
cc was 0 this am
ph 7.5 before shock
alk 160
What do i do with the pool toys? If it is mustard algae I have heard that it can linger on rafts, etc.

Thanks for all your help!!