I have an unusual problem where our pool doesn't seem to be losing chlorine at any rate.
We just moved into a home with a pool. An initial test showed CYA was 140 (I use a brand new Taylor K-2006C) and FC was at 4.5 . I do know the previous owner exclusively used pucks, so I was expecting that. After a few days, we had small spots of algae appear at the bottom on the pool.
I raised the FC level to about 35 and kept it there with liquid chlorine and a little CalHypo, and after a few days it mostly cleared up. I know it's not quite shock level for the CYA, but I didn't have enough chlorine on hand to raise it any further.
It's now been 5 days, and I've been testing daily. The FC level has hovered around 30, and doesn't seem to be going anywhere. In the meantime I've been skimming leaves, brushing and vacuuming almost daily. The pool gets a lot of sun, though the water temperature is about 69 as the cold weather is coming in.
Despite some rain and refilling about an inch of water in the last few days (due to a leak in the offline chlorinator hose), the FC hasn't moved. The chlorinator is off, and hasn't had pucks for at least 2 weeks.
My latest test results (Taylor K-2006C):
FC 30
CC < .5
CYA 90 (somehow that dropped)
pH 7.5
TA 100
Is it just the colder water, or lack of swimming causing this? Residual chlorine from the chlorinator? My worry is I haven't added chlorine in 5 days and I may be getting a false reading or something. I've been using the 10ml DPD-FAS test to save on reagent, but other following the instructions to the letter. Any help appreciated!
We just moved into a home with a pool. An initial test showed CYA was 140 (I use a brand new Taylor K-2006C) and FC was at 4.5 . I do know the previous owner exclusively used pucks, so I was expecting that. After a few days, we had small spots of algae appear at the bottom on the pool.
I raised the FC level to about 35 and kept it there with liquid chlorine and a little CalHypo, and after a few days it mostly cleared up. I know it's not quite shock level for the CYA, but I didn't have enough chlorine on hand to raise it any further.
It's now been 5 days, and I've been testing daily. The FC level has hovered around 30, and doesn't seem to be going anywhere. In the meantime I've been skimming leaves, brushing and vacuuming almost daily. The pool gets a lot of sun, though the water temperature is about 69 as the cold weather is coming in.
Despite some rain and refilling about an inch of water in the last few days (due to a leak in the offline chlorinator hose), the FC hasn't moved. The chlorinator is off, and hasn't had pucks for at least 2 weeks.
My latest test results (Taylor K-2006C):
FC 30
CC < .5
CYA 90 (somehow that dropped)
pH 7.5
TA 100
Is it just the colder water, or lack of swimming causing this? Residual chlorine from the chlorinator? My worry is I haven't added chlorine in 5 days and I may be getting a false reading or something. I've been using the 10ml DPD-FAS test to save on reagent, but other following the instructions to the letter. Any help appreciated!