A good method of draining is the percentage method. If your pool at least partially relies on chlorine as a sanitizer and you find your chlorine level to be low then it is critical you adjust the chlorine level up.
To get rid of cloudiness you will have to do a liquid chlorine shock to raise the level of free chlorine since the chlorine produced by the generator is not enough.
How to get chlorine level up in saltwater pool. You generally want to maintain a level of 1 3 ppm parts per million of chlorine in your pool although for commercial pools they generally need a level of 3 5 ppm. So to lower your cya you must drain a portion of your pool and then refill with fresh water. Salt water pools require higher amounts of cya so they should be kept between 70 and 80 ppm per most saltwater system manufacturers.
You can regulate the amount of chlorine your swcg produces by adjusting its percentage setting up or down to increase or decrease fc level in your water respectively. When the free chlorine level is low that usually means it s time to add more salt but it may mean a couple of other things as well. Your pool can lose up to 90 of its chlorine on a bright sunny day without a stabilizer.
How to raise the chlorine level step 1 test the fac concentration so you know how much you have to raise it. To properly adjust your swimming pool water you will have to do what is known as breakpoint chlorination. When the levels of chlorine and cyanuric acid are balanced and the water is clear the chlorine.
Saltwater chlorine generators are designed to produce small amounts of chlorine but continuously to maintain ideal free chlorine level in your water. This will bring your pool water chlorine back up to a level where it s very effective at killing organisms and disinfecting the pool water. Instead of adding chlorine to sanitize a saltwater pool you add salt and then a chlorine generator converts it to chlorine.
Cya unlike chlorine does not dissipate from pool water. This is very important to help keep swimmers safe and keep the water in the pool clear. You can raise cya levels simply by adding more of the product but lowering them is a little trickier.
If you regularly add external chlorine to your pool to help maintain your free chlorine levels then you need to be aware of your stabilizer levels cya cyanuric acid. If the water is cloudy or green you may have to shock the pool by raising the chlorine level to 10 ppm or more and wait for the level to drop to 5 5 ppm before swimming. A chlorine generator just assists you in maintaining the level of free chlorine.
A salt pool s cya levels hover around 80 90 parts per million ppm whereas chlorine pools should be about half that at 40 ppm. The cya level in your pool when maintained at 30 to 50 parts per million serves to provide protection for your chlorine from uv degradation.