3,000 gallon AG pool w/cover in CA winter: FC level drop comparisons?

[danimal67]

I'm just curious if anybody on the forum has a similar situation to me, i'm wondering what your FC levels are and how quickly they drop.

I have an above ground 3,000 gallon vinyl pool with cover.
Southern CA, water temp is around 55-60°
Run the sand filter 4 hours a day.

Seems I'm only losing about 1ppm of FC every week, which is awesome.
Is this pretty standard under these conditions?
I knew the FC would last longer in winter, but didn't expect it to last THIS long!

 

[kimkats]

My pool is bigger but yeah the FC is holding with the cooler temps. BUT I am having to be very careful as we are having record highs right now LOL The water temps have not quite caught up with the air temps so I am good. I add chlorine about every 3 days or so depending on the rain.

Kim

 

[Casey]

You also have the pool,covered so you have nearly eliminated the the sun's ability to consume the chlorine, and as already mentioned, the cooler temps. All perfectly normal.

 

[duraleigh]

A VERY important principle of TFP is that two things consume chlorine....

1. Sunlight

2. Organics in your pool.

You have eliminated the sunlight and apparently closed with a crystal clear pool (no organics)

You are seeing the results of your good pool management.

 

[danimal67]

Just a quick followup:
On December 14th the FC was 8.
On January 18th the FC was 4.
So less than 1 FC drop per week!
PH is holding at 7.5 with a water temp of about 58°.
Great advice on this forum, very helpful.
I think I'll leave my pool open year round from now on, very easy to maintain.
Cheers!