Hello all,
FC - 3.4
CC - 0.0
pH - 7.5
TA - 90
CH - 260
CYA - 35
Inground, vinyl pool, 24,500 gallons, sand filter.
This is my first year with a pool, and our pool store is trying to sell me a BioGuard winterizing kit (amazon listing). It has dichlor shock (with clarifiers, buffers...