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#Pool water chemistry calculator free

Use of high pH chlorine (Sodium Hypo or Calcium Hypo).

Sodium hydroxide (byproduct) from salt chlorine generators.

At a pH of 8.0, only about 20% of your chlorine is available to kill pathogens and contaminants. Another effect of high pH is that chlorine becomes less active, almost sluggish. Conversely, if the pH is above 7.8, the water is in a scaling (basic) condition and must add an acid to bring down the pH to prevent the formation of scale or calcium deposits on our tile, in the filter, or even precipitation out of solution into a cloudy water condition. It doesn't take too long for a low pH condition to weaken vinyl, strip heat exchangers and erode plaster. If your testing (recommended daily) of the water shows a pH value below 7.0 the water is in a corrosive (acidic) condition and you will need to add a base to bring the pH into a more basic range to prevent corrosion. Keep both on hand (pH Up/Down), to be able to make complete adjustments when needed. To have pH in balance we adjust the water with additions of pH increasers (bases) or pH decreasers (acids) to achieve the range of 7.2 - 7.6, or more precisely, 7.4. This is, coincidentally, in range with proper pH levels for your pool. The human eye has a pH value of 7.35, being just slightly basic. Ever heard of acid rain? This is rainfall with a very low pH. Everything that enters your pool has a pH value. Below 7.0 and a substance is defined as being acidic, while levels above 7 are said to be basic or alkaline. pH is a logarithmic scale from 0-14, with 7 being neutral. PH is a measure of how acidic or basic the water is. To run complete home pool water analysis, use the same test kit the pool stores use, the Taylor K-2005, or the same test kit as health inspectors, the ColorQ Pro.Īny good discussion on pool water balance would certainly cover some definitions on pH, Total Alkalinity and Calcium Hardness levels in pools.

#Pool water chemistry calculator free

Being able to accurately test cyanuric acid, free and total chlorine and acid and base demand is also important. How do we know when our water is over or under saturated?īuy a good test kit (with fresh testing reagents) to measure the chemical levels of pH, alkalinity, and calcium hardness. Water which is over-saturated will attempt to throw off some of its content by precipitating minerals out of solution in the form of scale. Water which is under-saturated will attempt to saturate itself by dissolving everything in contact with it in order to build up its mineral content. The cliché that " water seeks its own level" certainly applies here. So then, balanced water is that which is neither over or under-saturated. When water is over saturated and can no longer hold the minerals in solution it is in a scaling condition.

When water is considerably less than saturated it is said to be in a corrosive or aggressive condition. It reminds me of the school science experiment, where you dissolve spoonful after spoonful of salt (or sugar) in a beaker, until at last - the water will dissolve no more salt into solution, and the grains just sit on the bottom of the beaker. This concept of water balance is derived from the fact that water will dissolve and hold minerals until it becomes saturated and cannot hold any more water in solution. It may also be defined as water that is neither corrosive or scaling.

Chlorine levels should remain constant in the 1-3 ppm range. These are: pH: 7.2-7.8, Total Alkalinity: 80-120 ppm, Calcium Hardness, 180-220 ppm and Cyanuric Acid (Stabilizer): 30-50 ppm.

A pool that is "balanced" has proper levels of pH, Total Alkalinity, and Calcium Hardness. Continuous filtration and disinfection removes contaminants which keep the water enjoyable but this is does not balance your water. You will probably not change the water in your pool for many years. Everything that comes into your pool will affect your pool water balance - in short, anything that comes in contact with your pool water. Your pool water is constantly changing, year round. It is simply the relationship between different chemical measurements in your pool water. Pool Water balancing is not such a complicated exercise.