Free chlorine is the sanitizing portion of chlorine. You may not want to reduce that. Are the levels excessive? There is a product which reduces or eliminates chlorine but beware. Not a good product if you use too much. What are your readings?
Thiosulfate will neutralize chlorine. Buy it at a pool store.
Cl is an abbreviation for "chlorine" you should check free chlorine and total chlorine for comparison.
Someone/something changed the original question and that is probably why it has not been answered.Safe levels for chlorine are 1.5 ppm to about 5.0 ppm. of free chlorine. You should have a test kit that will give you free chlorine readings as opposed to just a chlorine residual. Free chlorine is what sanitizes the pool water. If you can smell a chlorine odor coming from your pool then you do not have enough chlorine in the water.K
Many people install salt water systems under the impression that it is chlorine free. Salt water systems produce chlorine electronically and therefore does not require adding chlorine to the water physically. So salt water is not chlorine free water. There are alternative pool sanitation systems that use an advanced oxidation process, combined with copper ionization to sanitize the water. These oxygen based systems do not produce any chlorine. These systems produce 100% chlorine free water.
Combined chlorine is when the chlorine molecule has attached itself to other molecules in water. In other words it has "combined" with something else in the water. Those could be iron, manganese, ammonia or other things depending on the source water. Free chlorine is the molecules that are "free" in the water to do the disinfection.
Any one or thing swimming in the pool will reduce the amount of free chlorine available in the swimming pool. Dog hair body fats and other impurity's will take up free chlorine in the pool thereby reducing the amount of effective chlorine available. Dogs bring into the pool more contaminants than do humans for AA lot of various reasons.
Thiosulfate will neutralize chlorine. Buy it at a pool store.
Free Chlorine is the Chlorine which is free to do its work in the pool, as opposed to Combined Chlorine which is chlorine that has combined with contaminants and is tied up and ineffective as a sanitizer in the pool. Sometimes you will see it abbreviated as FAC, which stands for Free Available Chlorine.
Large amounts of bio matter in the pool Will reduce the amount of free chlorine in the pools water and as a result cause weaker disinfection of the water to take place.
Cl is an abbreviation for "chlorine" you should check free chlorine and total chlorine for comparison.
Nothing you just wait for it to go down. if you have a salt water pool there is usually an aadjustment to reduce the chlorine level,
Someone/something changed the original question and that is probably why it has not been answered.Safe levels for chlorine are 1.5 ppm to about 5.0 ppm. of free chlorine. You should have a test kit that will give you free chlorine readings as opposed to just a chlorine residual. Free chlorine is what sanitizes the pool water. If you can smell a chlorine odor coming from your pool then you do not have enough chlorine in the water.K
Add stabiliser to the water (Cyanuric acid).
There is 3 measurements of chlorine in a pool or spa. Total chlorine, combined chlorine, and free available chlorine. Free available chlorine is the good chlorine that is active in the pool killings germs and algae. Combined chlorine is chlorine is basically chlorine that was once active but has killed germs or bacteria and is now inactive in the pool. Total chlorine is free available and combined chlorine added together. If your combined chlorine is higher than free available chlorine then the water needs to be shocked to eliminate the combined chlorine. But be careful here. If you don't reach what's called break point you will only add to the combined chlorine. There are products on the market which will only remove combined chlorine without effecting your free available chlorine if you are unsure about reaching breakpoint. Hope this helps.
Many people install salt water systems under the impression that it is chlorine free. Salt water systems produce chlorine electronically and therefore does not require adding chlorine to the water physically. So salt water is not chlorine free water. There are alternative pool sanitation systems that use an advanced oxidation process, combined with copper ionization to sanitize the water. These oxygen based systems do not produce any chlorine. These systems produce 100% chlorine free water.
A salt water pool has a chlorine generator on it that turns sodium chloride into chlorine gas. The water in the pool is not like the ocean, you can't taste the salt and it doesn't sting your eyes. The water isn't as harsh on clothing, eyes, skin and hair as chlorine is.
Combined chlorine is when the chlorine molecule has attached itself to other molecules in water. In other words it has "combined" with something else in the water. Those could be iron, manganese, ammonia or other things depending on the source water. Free chlorine is the molecules that are "free" in the water to do the disinfection.