The ideal chlorine combination of your pool is between 1 and 3 parts per million (ppm). In order to kill pathogenic viruses, you'll want to make sure your chlorine concentration doesn't fall below 1 ppm.
A pool should have a chlorine level between two and four parts per million (ppm). Make sure your above ground pool has enough by testing your water about every other day with chlorine test strips, such as these Aqua Chek Test Strips.
INITIAL STARTING DOSAGES :
Maintain chlorine at a minimum of 1.5 ppm and up to 3 ppm. The more swimmers you have and the warmer the water is, can double your pool's chlorine consumption. Add whatever amount of chlorine it takes to maintain a 1.5 ppm chlorine..
To dose water in a tank with 5 mg/L chlorine use: 40 millilitres of liquid pool chlorine or 170 millilitres of bleach, for every 1000 litres in the tank.
56% - You will need 19g by weight or 19ml by volume of cal-hypo 56% to raise your pool chlorine levels by 1PPM per 10,000 liters of water. 65% - You will need 16g by weight or 15ml by volume of cal-hypo 65% to raise your pool chlorine levels by 1PPM per 10,000 liters of water.
Chlorine, either solid or liquid, is a pesticide used in pools to destroy germs, including those from feces, urine, saliva and other substances. But excessive exposure to chlorine can cause sickness and injuries, including rashes, coughing, nose or throat pain, eye irritation and bouts of asthma, health experts warn.
At first you'll add chlorine in what's called “shock” levels – an extra heavy dose to start your pool off. A shock dose coupled with extra circulation will ensure that all the water gets treated properly in the beginning.
The Short, Short Version. Test Chlorine levels at least twice per week. Also make sure to test after heavy use or rainfall, as Chlorine levels have likely been depleted. Pool chlorine is responsible for sanitizing your pool and hot tub water to make it safe to swim.
Liquid Chlorine: Depending on how much you have added and the size of your pool, it is generally safe to wait about 4 hours after adding liquid chlorine or until levels reach 5 ppm or lower. After Shocking Your Pool: It is safe to swim once your chlorine levels reach 5 ppm or lower, preferably at 3 ppm.
Pools can immediately turn green after shocking when they have metals like copper or iron in the water. These metals oxidize when exposed to high levels of chlorine which makes the pool water turn green. Metals in the water are caused by some algaecides and using well water.
NEVER just throw them into your pool water. This will cause them to dissolve on the floor and it can damage and create a permanent bleach stain to your liner or concrete.
Divide the daily chlorine input by the MGD flow of the facility. In the example, the result would yield 33.33. Divide the result by 8.34 pounds per gallon to find the chlorine concentration. In the example, the concentration is 4 milligrams per liter.
Household bleach, Clorox and liquid chlorine can all be used to sanitize a pool. They are all types of chlorine. Household bleaches such as Clorox usually contain about 5-6% available chlorine, about half that of pool liquid chlorine. Household bleaches often have unwanted fragrances and colors.
What chlorine level is too high to swim? It depends on who you ask, but the acceptable range is between 1 to 5 ppm. (So, for example, 10 ppm chlorine is not safe to swim in — that's too high.)
CDC recommends pH 7.2–7.8 and a free chlorine concentration of at least 1 ppm in pools and at least 3 ppm in hot tubs/spas.
To reach the initial salt level recommended by the salt system manufacturer (usually 2400-3200 ppm), you will need to add about 200 lbs of pure pool grade salt (NaCl), per 10,000 gallons of water.
How Much Chlorine Should I Add to my hot tub? A chlorine level of between 3-5mg/l must be maintained in your hot tub at all times. The addition of chlorine will depend upon usage and bathing habits. It could be daily or every 2-3 days (for 1mg/l add 2g per 1000 litres).
Typically, drinking water has 0.5mg of chlorine per litre, compared to pools that have up to 3mg. Investigations found the scare across Derbyshire and Leicestershire was caused by failures at the chlorine dosing unit at Castle Donington Service Reservoir.
Liquid chlorine may be a good choice if you have a large pool, but the costs associated with it, and the available chlorine per pound could mean that chlorine granules are the better option. In the end, both liquid chlorine and chlorine granules will do their job and keep your pool clean and clear.
Find out the volume of your pool. This will give you an idea of how much shock you need. The general recommendation is to use 1 pound of cal hypo shock for every 10,000 gallons of pool water, and 10 ounces of sodium hypo with around 12.5% chlorine to sanitize your pool. Make sure the pool water is at its normal level.