#PUBLIC POOL QUICKLIE PLUS#
#PUBLIC POOL QUICKLIE FREE#

Nitrites and nitrates should not be higher than 10 ppm. Nitrates are not oxidizable and are not destroyed by any common oxidizer.

If you add enough chlorine when nitrites are present, they will be destroyed and gas off as nitrogen.

#PUBLIC POOL QUICKLIE FREE#

If you fail to keep enough free chlorine in the water to handle the expected contamination, then nitrites can be produced. The minimum chlorine level in the pool should be 7.5% of the CYA level or 5% of the CYA level if using borate. If you keep enough chlorine in the water these will be oxidized as they are introduced.

deodorant, hair spray, perfume, cosmetics, sunblock products, and other personal care items. These include ammonia, urea, proteins, and amino acids – all from sweat, urine, saliva. Nitrites are oxidized nitrogen from nitrogen-containing compounds in the water. Using a phosphate remover will get rid of the phosphates. Phosphates should be kept below 500 ppb (that is parts per billion). Many sequestering and chelating agents, metal removers and stain removers along with many tile cleaners have phosphates or phosphorus or phosphoric acid in them. Phosphates are the number one major nutrient for algae. The pH – Alkalinity Adjustment Tool can help with giving you exact amounts of chemicals needed to raise or lower pH and alkalinity. The temperature will be important for Saturation Index calculations.

#PUBLIC POOL QUICKLIE PLUS#

TDS should be tested and lowered if more than Starting TDS plus 1500 ppm.

Unbalanced water is easy to remedy.Īdjust pH to 7.5, total alkalinity to 90 ppm, and calcium hardness to 350 ppm for cementitious surfaces like plaster, or 250 ppm for vinyl, fiberglass, etc. So the total alkalinity may seem okay but when you adjust it for CYA, it can be low making the water corrosive. High CYA can also produce corrosive water because part of the CYA shows as total alkalinity. CYA slows down the chlorine kill rate so more chlorine is needed for safe water. CYA will keep the chlorine in the water 8 times longer than without it. The degradation rate of chlorine in direct sunlight without CYA is 75 % loss in 2 hours or a complete loss of chlorine in 4 hours. You need 10 ppm CYA for 1.0 ppm free chlorine. When CYA is low, the chlorine is not protected. To protect chlorine you need cyanuric acid (CYA). The Pool Percent Drain Calculator can do the calculation for you. When TDS reaches starting or tap water TDS plus 1500 ppm, it is time to drain part or all of the water. Specifically, TDS is sodium, chloride, calcium, magnesium, carbonate, bicarbonate, nitrate, phosphate, sulfate, iron, copper, manganese and aluminum. It represents the total of all the dissolved material in the water. All water has some TDS except for rain water, distilled water or reverse osmosis (RO) water.

Usually TDS is not a problem but in certain circumstances TDS can cause problems. High TDS is lowered only by water replacement. Incomplete oxidation and undesirable disinfection byproducts will result if the superchlorination does not have sufficient time – minimum is 12 hours and chlorine level should be checked a few times during the first 12 hours and if the chlorine level has gone down by 2.0 ppm, more chlorine should be added to bring it back up to starting chlorine level. Then make sure the dose has time to work – usually, 12-36 hours will do. Superchlorinate or shock will lower combined chlorine.Īdd enough chlorine to raise the chlorine level to 15% of the CYA level or add an amount of chlorine that is equal to the combined chlorine level times 10, whichever is greater. If CC is greater than 0.2 ppm, you need to superchlorinate. Test strips can be used but may not have the same accuracy. You should measure both of these with a good, quality test kit. Water analysis will reveal the usual causes.Ĭombined chlorine should be zero or a maximum of 0.2 ppm.Ĭombined chlorine is the difference between FC (free chlorine) and TC (total chlorine). It could be chloramines, combined chlorine, high TDS, low cyanuric acid, unbalanced water, phosphates, or nitrites/nitrates. The first thing to do is to test the water. The 2 gallons of chlorine in a 15,000-gallon pool are about 17 ppm of chlorine and it is gone in less than a week. You put in 2 gallons of chlorine and a week later the chlorine level is near zero. You add a couple of gallons of chlorine and it disappears in a short time.

Public pool quicklie