I use a feeder so I don't have to over dose to keep above the minimum because I'm aways adding chlorine throughout the day to keep it steady instead of highs and lows. The problem with the other method is you have to be careful not to allow anyone to swim when it's high, pool safety standards say don't swim in levels above 5 ppm, chlorine can cause heath problems,
FC levels
- Thread starter Drd
- Start date
What health problems could be caused with anything above 5ppm?
I thought your cya/fc ratios were related. Meaning the higher your cya level the higher fc you can have and safely swim. Please correct me if I am wrong.
- Mar 5, 2020
- 3,221
- Pool Size
- 66000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Astral Viron V35
JoeSelf
Gold Supporter
You are not wrong, FC level is related to your CYA level. It is safe to swim as long as you are at SLAM level or below for your CYA.
Oly
Gold Supporter
This doesn't take the FC/CYA ratio into account.
If you're not supposed to swim with FC levels above 5ppm, that means the vast majority of members here would never be in their pools.
cdadams1223
Silver Supporter
- May 9, 2023
- 212
- Pool Size
- 13000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite Pro (T-15)
This is 100% not true. As mentioned above, it all depends on your CYA/FC relationship. What’s your current CYA level? Let’s say you’re sitting at 30ppm. If you have a SWG or use LC your range is 3-6ppm, however, your SLAM level is 12ppm. You could swim in your pool with 12ppm of FC or less and be perfectly fine.
I misread something when posting my original post, so it's been deleted.
Suffice to say that there's a lot of bad information out there about chlorine. Much comes from the people who profit on the sale of alternative methods of algae prevention. Following TFPC is considerably safer than most of the "dump this blindly in the water and see what happens" methods promoted out there.
Suffice to say that there's a lot of bad information out there about chlorine. Much comes from the people who profit on the sale of alternative methods of algae prevention. Following TFPC is considerably safer than most of the "dump this blindly in the water and see what happens" methods promoted out there.
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Oly
Gold Supporter
Your signature states that .....
I use HASA Liquid Chlorine 10% for sanitation, use offline liquid Chlorine feeder (Liquidator)
That is a good method for keeping your FC in the target zone for your CYA over time.
I would suggest you stay well above the minimum and stay in the target range 24/7. The health risk for FC above 5ppm with a CYA ppm of 30ppm is less than your risk of drowning in your pool. FC in tap water has an EPA max of 4ppm with 0 CYA and folks are drinking, showering and bathing all over the US every day. The issue with rocking the minimum are the spikes where daily FC demand punches you below the minimum and your risk becomes real. Ultimately your pool, your choice but you should rethink your risk assessment.
This is not directed at you Drd, but I am amazed how many intelligent people can completely look beyond the huge risk involved with driving a car but will laser focus (and stress over) the other thousands of less risky exposures we face in modern life.
I use HASA Liquid Chlorine 10% for sanitation, use offline liquid Chlorine feeder (Liquidator)
That is a good method for keeping your FC in the target zone for your CYA over time.
I would suggest you stay well above the minimum and stay in the target range 24/7. The health risk for FC above 5ppm with a CYA ppm of 30ppm is less than your risk of drowning in your pool. FC in tap water has an EPA max of 4ppm with 0 CYA and folks are drinking, showering and bathing all over the US every day. The issue with rocking the minimum are the spikes where daily FC demand punches you below the minimum and your risk becomes real. Ultimately your pool, your choice but you should rethink your risk assessment.
This is not directed at you Drd, but I am amazed how many intelligent people can completely look beyond the huge risk involved with driving a car but will laser focus (and stress over) the other thousands of less risky exposures we face in modern life.
The same as if I told you that we are melting here in my office, as the temperature is over 30 degrees.
If I dont say C/F, it will probably not make sense to most users here
5ppm at 0 cya is pretty high…… 5ppm at 80 cya is more or less drinking water.