You'll need about 52-104 oz of liquid chlorine per 10,000 gallons of water. This amount should get the chlorine level to between 5 and 10 ppm.
In the heat of summer your pool can require 4 grams of chlorine per cubic meter of water (1000 litres) of water every day. For every person who uses the pool each day, you will require a further 10 grams of chlorine.
Aim to maintain a chlorine level of 3 to 5mg/l at all times. How frequently you add more chlorine will depend on your usage and bathing habits. It could be daily, every two to three days or weekly. For 1mg/l, add 2g per 1000 litres.
As long as you test and actually KNOW what you have and what you need in the pool, you can manage it any which way that works to keep the levels up. Around here we usually suggest that you keep your chemicals "separate", that is, add exactly as much CYA as you need, then add exactly as much chlorine as you need.
The best time of day to shock pool is when the sun is down. So, experts recommend shocking your pool in the evening or at night, to make sure it does its job. Shocking during the day can be ineffective as UV rays from direct sunlight significantly reduce free chlorine levels.
It is recommended that chlorine be added at the end of the day once the sun has set and there are no more bathers in the pool.
The right way and time
Since liquid chlorine will burn off quickly in direct sunlight, it's best to add it to your pool in the evening. Wait until the sun begins to or has set. Don't cradle the bottle of chlorine – instead, hold it as far away from you as possible as you add it to the pool.
The basic balance of chlorine to water is between 1 and 3 ppm, or 0.00013 ounces of chlorine per gallon of water.
2 ppm of Chlorine will take up to 4 and a half days or around 110 hours to evaporate from 10 gallons of standing water. Ultraviolet light, water circulation, and aeration will speed up the evaporation process dramatically. Chlorine will last between 6 and 8 minutes in 10 gallons of boiling tap water.
For the greatest protection against algae, bacteria, and cloudy water, Intex pools should maintain a chlorine level of 2.0-4.0 ppm at all times. If you opted for the Intex Salt Chlorinator, you can make your own chlorine by adding the correct amount of Pool Salt to the water.
The best rule of thumb for pool owners trying to estimate how many tablets to add is this: Add one tablet for every 5,000 gallons of water and always round up. For example, if your pool has 21,000 gallons of water, add five tablets per week. If it has 8,000 gallons, use two tablets.
You can swim with chlorine tablets in the pool if the chlorine tablets are in a container. Getting in touch with those tablets can cause rashes, irritation and eye problems. However, to be in a safe zone it will be better if you wait for 3 to 5 hours till the chlorine levels touch 4 to 6 ppm.
Calculate: 1 bag for each 10,000 gallons, per week or per month. Example: 2.5 bags per week for 20 weeks, or 50 lbs. Or 2.5 bags per month for 5 months, or 12.5 lbs. Recommendation: Get a 50 lb bucket of shock chlorine if you expect to shock weekly, or for 5 monthly shocks, you could buy the 12 Pack of pool shock.
It is recommended to wait at least 20 minutes to an hour after adding water balancing chemicals. You should wait 2-4 hours (or one full cycle through the filter) to swim from the moment you use calcium chloride in your pool. It is safe to swim once your chlorine levels are around 5 ppm or after 24 hours.
Chlorine is added to the water to kill germs. When it is added to a swimming pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E. coli, as well as germs that cause viruses such as diarrhea and swimmer's ear.
If you decide to place the water in a jug that's left open in the refrigerator, the chlorine should evaporate completely within 24 hours. For quicker evaporation times, leave the water at room temperature.
Size of the pool.
And by size, it's more about the volume of water the pool can contain. For example, a 5,000-gallon pool may just need one chlorine tablet or stick per week.
Sodium hypochlorite (also known as liquid chlorine) is another frequently used option for shocking pool water. This is a common choice in pool shock because you can pour the solution directly into the pool without having to dissolve the chlorine in water beforehand.
Chlorine is heavier than water and will sink to the bottom if you don't slowly pour it into a return jet stream or brush the bottom after you add it. Once it is mixed in, it does not come out of suspension.
Pour the liquid chlorine into the pool with the jug as close to the water surface as possible in order to prevent splashing. Add the liquid chlorine to the deep end of the pool. After all of the liquid chlorine has been added, brush the walls and floor of the pool.
Pools can immediately turn green after shocking when they have metals like copper in the water. These metals oxidise when exposed to high levels of chlorine which makes the pool water turn green. Adding a metal control product such as Zodiac Metal Remover will help to restore the pool water.
Before you start pouring shock in the pool, the first step is to brush the sides and floor of your pool to loosen all the algae. Doing this breaks the skin and allows the pool shock to more easily kill the algae. Once you've done this, it is important to make sure you have the proper pH level in your water.