Dumb question - why is recommended CYA higher for SWG than for liquid Cl2? Isn't it all the same Cl2, regardless of source? All SWG does is create the Cl2, compared to just pouring it in the pool. Just wondering.
CYA for SWG v. Liquid Chlorine
- Thread starter joelans
- Start date
- Jun 7, 2024
- 415
- Pool Size
- 7300
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Intex Krystal Clear
It’s set higher for the peak so you don’t have to run your SWCG at max or longer than necessary. It saves your equipment.
- Jun 24, 2021
- 16,258
- Pool Size
- 29000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
There is no reason that you cannot use the higher CYA levels with SWG in a liquid pool.
The reason the max threshold is lower with liquid is the following:
With a SWG, generally, it adds chlorine on a consistent basis and can maintain FC.
Higher CYA allows the cell to run for less time to maintain FC at higher CYA levels. This extends the life of the cell (in calendar time) because you are using it less.
Because the SWG adds chlorine on a consistent basis, it is less likely to drop below recommended levels, allowing algae to take hold.
Liquid chlorine dosing is typically a daily affair. FC demand can spike and you can find yourself below target range with ALGAE.
Slamming a pool at 60 CYA is much easier and will consume less chlorine than CYA of 70-90.
Again, you can use the higher CYA in a liquid chlorine pool...just know that if you allow FC near minimums, be prepared to use a lot of chlorine, or drain a portion of the pool to get CYA down...if you get algae and have to SLAM.
The reason the max threshold is lower with liquid is the following:
With a SWG, generally, it adds chlorine on a consistent basis and can maintain FC.
Higher CYA allows the cell to run for less time to maintain FC at higher CYA levels. This extends the life of the cell (in calendar time) because you are using it less.
Because the SWG adds chlorine on a consistent basis, it is less likely to drop below recommended levels, allowing algae to take hold.
Liquid chlorine dosing is typically a daily affair. FC demand can spike and you can find yourself below target range with ALGAE.
Slamming a pool at 60 CYA is much easier and will consume less chlorine than CYA of 70-90.
Again, you can use the higher CYA in a liquid chlorine pool...just know that if you allow FC near minimums, be prepared to use a lot of chlorine, or drain a portion of the pool to get CYA down...if you get algae and have to SLAM.
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