Almost ready to flip the switch and turn on the SWG, what is a good starting point to set the SWG at? My pump normally runs 9 hours a day.
What percentage for SWG?
- Thread starter PullJunkie
- Start date
- Jun 22, 2014
- 48,011
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
With a 40K SWGl for your 15K pool, maybe start at about 25-30%. Watch the FC level each day for a few days and adjust it up or down from there.
mguzzy
Gold Supporter
Use the PoolMath app to calculate it for your runtime, cell, and SWG model. It's one of the coolest features of the app!
That said I like to start at 50% and figure out a runtime that gives me my required Cl in average conditions. Then i have the wiggle room to turn it up or down as the conditions warrant.
That said I like to start at 50% and figure out a runtime that gives me my required Cl in average conditions. Then i have the wiggle room to turn it up or down as the conditions warrant.
Hey mguzzy,
Not trying to hijack this thread but I just got a new pump and he recommended running 24 hours a day (instead of my usual 9 hours), so i'm trying to determine what to set my % at to keep my FC level. I'm looking at the poolMath app now and I see where you can get a suggestion for % to use if you need to raise your FC (for instance If have my free at 4.5, my target at 5, and my pump run hours at 24 and it says to run for 24 hours with 9%).
But if we are looking to keep it at a steady FC amount, is there a way to do that with the app?
Not trying to hijack this thread but I just got a new pump and he recommended running 24 hours a day (instead of my usual 9 hours), so i'm trying to determine what to set my % at to keep my FC level. I'm looking at the poolMath app now and I see where you can get a suggestion for % to use if you need to raise your FC (for instance If have my free at 4.5, my target at 5, and my pump run hours at 24 and it says to run for 24 hours with 9%).
But if we are looking to keep it at a steady FC amount, is there a way to do that with the app?
laprjns
LifeTime Supporter
- Aug 14, 2012
- 577
- Pool Size
- 30000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pureline Crystal Pure 60,000
Figure you will be losing 3 to 4 ppm per day. So assume 3.5 ppm per day and in PoolMath play around with the pump time and % to achieve the 3.5 ppm. Run your pump and SWG with these setting then monitor you actually FC making adjustments from there. Once you get it dialed in you will not have make to adjustments that often.
So for instance set my current FC to 0, set my target to 3.5, and use that suggested %, making any adjustments as needed? That makes sense, I just didn't know there was a '3-4 ppm' loss to use as my baseline.
Oddly, I have been running my SWG at 70% for 9 hours a day and it has kept my FC steady. I just tried putting things in the app (0 current, 3.5 target) with the 24 hour run time and it says I should run it at 66% to get that much chlorine. That doesn't seem to add up.
laprjns
LifeTime Supporter
- Aug 14, 2012
- 577
- Pool Size
- 30000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pureline Crystal Pure 60,000
When determining runtime and SWG % I prefer to use the "Effects of Adding" section of PoolMath. This way I don't need to change my actual current FC.
Assuming that you have a T15 and using your pool size, 9 hr run time and 70% SWG setting that means that you are producing 1.4 ppm FC per day. Looks like you are doing a lot better than the normal 3 to 4 ppm per day lose. So if you are confident that that lost is correct, then use 1.4 ppm to get your runtime and % setting .
Similar threads
