lost 2 ppm overnight 8 hours
added 2 gallons of 10% bleach this AM @ 05:30
@06:30 FC=21
how long do I need to maintain?
until I can pass OCLT tonight?
added 2 gallons of 10% bleach this AM @ 05:30
@06:30 FC=21
how long do I need to maintain?
until I can pass OCLT tonight?