Long time member but don't post much anymore. Very familiar with BBB. Outdoor IG VL pool. What is the current thinking on preferred CYA level and why?
For the past several years I've used 40 ppm as my target. Due to being gone early on vacation pool just opened. Water crystal clear, ph 7.5 Alk 100 ppm but no CYA. Will probably use trichlor pucks until I hit target then revert back to bleach.