Pool crystal clear. Been that way all summer. Small spots of Algae.
Used BBB method as much as possible all summer, I had to cheat a bit because pool pump is on the way out, and not circulating water as much as it should. (will get new one in spring) I tied a floater with chlorine puck in it next to spot that kept getting a silver dollar size of green algae growing. Kept free chlorine about 3 - 5 ppm by adding 12.5% "shock" every day and brushed every other day (and used the pool as much as possible).
Pool water at 60 degrees and want to get it ready to close.
Removed pool ladder and liner protector under it. Green algae there about 2 inch by 6 inch spot.
Oct.1 - Raised FC to 12, took out pucks, and brushed pool. PH 7.4 TA 100 CYA 95 ish?
Oct.2 - Rain raised pool level about 4-5 inches . Lots of leaves etc.
Oct 3 - Cleaned out leaves, FC 11ppm (no chlorine additions since Oct. 1) CC - Zero CYA down to 55 Checked FC level about 5 hrs. later and it was 9.5
Oct 4 - thinking I should lower water level down a bit more and add fresh water to lower CYA even more. Then proceed to slam with lower level of FC needed, the thought of bringing FC to 22( with a CYA of 55) Scares me because of vinyl liner. Would like to get CYA down to about 30 ideally. Or does the Higher CYA serve to "protect" the liner from higher FC levels?
Any of this make sense?
What are your recommendations?