Just curious if the amount of bleach i'm having to add is reasonable?? my cya is 50 so i'm trying to keep fc at 6. yesterday morning fc was 5.5. There were 7-8 kids in it for a few hours and the cover was open all day. this morning fc was 1.5. Does this seem like a reasonable amount to use? it seems like i have been adding about 180 oz per day.