If the water is clean and clear, then add about 3 oz of liquid chlorine per 1000 gallons of water – while the pool filter is running. This should give you a chlorine level of about 3 ppm.
Boost it up to 30 ppm by adding 3 lbs of Stabilizer per 10,000 gallons of pool water, to protect free chlorine from the sun. Chlorine Adjustments: Lastly, after you have tested and added any adjustment chemicals needed, separately to the pool, you can raise the chlorine level.
Total Alkalinity (TA) is the first thing you should balance in your pool water. TA refers to the amount of alkaline material in the water. And since alkaline is a pH stabilizer, the number of alkaline substances in water will affect the pH balance. The ideal Total Alkalinity range for pool water is 80 – 120 ppm.
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.
This is because when you mix chlorine and algaecide together, it renders both of them useless. Hence, you should first shock the pool and wait for the chlorine levels to fall below 5 PPM.
Generally speaking you adjust PH first, chlorine second, and worry about everything else more gradually. However, there are many situations where you can adjust two or more numbers at the same time if the correct combination presents it's self.
As a general rule of thumb a DE filter can clear up a pool within 1-3 days, a sand filter 5-10 days, and a cartridge system can vary widely based on the size and condition of the filter elements, and how often they are disassembled and cleaned.
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.
Add chlorine until the chlorine level is between 1.0 and 2.0. Although some sources allow chlorine levels as high as 3.5, this may be irritating to skin and eyes. Allow 24 hours for the pool chemicals to stabilize.
Water pH ranges from 1 to 14. Lower numbers are more acidic, and higher numbers are more alkaline. Proper pool pH is right in the middle — pool pros recommend that pH be between 7.3 and 7.6 for optimum performance and cleanest water. If the pH gets higher than 7.8, the water is becoming too alkaline.
Low pH water will cause etching and deterioration of plaster, grout, stone, concrete and tiling. Any vinyl surfaces will also become brittle, which increases risk of cracks and tears. All of these dissolved minerals will hold in the solution of your pool water; which can result in staining and cloudy pool water.
If both the pH and total alkalinity levels are too high, you'll need to add pH reducer. Once you get your pH levels between 7.2 and 7.5 and your total alkalinity between 60 and 120 ppm you can move on to working on the calcium hardness and chlorine levels.
At chlorine levels over 10 ppm, swimsuits can begin to fade. Pool covers become damaged, and the water is generally uncomfortable and unsafe for swimmers. Close the pool and keep covers off until chlorine levels fall back below 5.0 ppm.
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.
Excessive levels of pool chemicals can cause your water to become cloudy. High pH, high alkalinity, high chlorine or other sanitisers, and high calcium hardness are all common culprits.
When the levels are properly balanced, chlorine will keep the algae at bay, but the water will slowly begin to turn green as the algae take over if there's not enough. But be careful—adding too much chlorine in pool water can cause those metals to oxidize and turn the pool a different shade of green.
For medium green pools, use 2 lb. of shock treatment per 10,000 gallons of water. So, for 25,000 gallons of water, use 5 lb. For dark green colored pools, it is better to use 3 lb.
How much shock do I need to shock my pool? A simple ratio and a standard rule of thumb to follow when you shock your pool is to dissolve one pound of either calcium hypochlorite or sodium dichlor for every 10,000 gallons of pool water.