Background: Inground, Vinyl, 23,000 gallons, FC 9, PH 7.2, CYA 80, Alk 100, Hardness 200
I use liquid chlorine to shock & 3"puck in 2 skimmers with pool pump running 7 x 24
Currently Shocking as FC was 0 yesterday AM
No FC so I added 3 pucks (2 skimmers & 1 floater).
Fri 12:00 - FC is 0.0. So I shock with 1 gallon Liq CL
Fri 14:00 - FC is 5.0. I then added 2 more gallons Liq CL
Fri 16:00 - FC is 17.5
Fri 20:00 - FC 14.5. I then added 1 more gallons Liq CL
Sa 07:00 - FC 14.5 / PH 7.4
Sa 08:30 - Added 2 lbs of (calcium hypo left over from last year)
It seems that every few days algae comes back after I shock with liqud CL and the pucks can't keep the basic FC level between shocks.
Do I go to a daily Liquid CL regiment and stop using 3" pucks? If so what amount?
Or maybe I just have never offically killed the algae beast?