First time poster, although I've been lurking around the forum for a month or so. I've been using the TFP method and trying to dial in my daily chlorine usage on our new pool (only 3 weeks old). Taking readings daily and experiencing a consistent 50% or so loss of chlorine per day. I bring it up to about 7.5ppm and it falls to 3.5-4ppm by the next day. Does this seem normal? Do I need to keep increasing my CYA above 50? I live in an area where temps are high--100+ during June and pool is exposed to full sunlight for a majority of the day (10+ hours). Seems like I'm using a lot of bleach daily to bring it back up to a point where it won't fall too far below the minimum, and I've been using 3 trichlor pucks in a feeder to bring CYA levels up to 50. My current readings are as follows:
CH - 225
TA - 120
PH - 7.5
CYA - 40-45
CC - 0
FC - 3.5 (before adding bleach for the day)
CH - 225
TA - 120
PH - 7.5
CYA - 40-45
CC - 0
FC - 3.5 (before adding bleach for the day)