Ok, I posted 'the green pool syndrome a few days ago'
Here is my status:
Since my CYA was 120 I decided to drain the water half way down.
My chlorine level was at 25 for two days and still is green
FC=25
Alk=100
PH=7.8
CYA=120

I noticed most of the algae is on the bottom cause
I brushed till i can't brush anymore

So I am filling my pool bacl to the normal level now. Just added a 32 ounce bottle of polyquat, and have the filter on recirc.from the bottom drain to dilute up the algaecide.

I keep brushing, wife thinks I am crazy adding good water to algae water but it's not safe to completely drain the pool.

I will check the levels later tonight after pool fills

16x32 vinyl pool= 21000 gallons

I will try some clarifier later.

And yes I replaced out DE filter last fall with a Hayward 250 lb sand filter

Hopefully my CYA goes down

ANy other thoughts

Mike