A high pH level can come from the chemicals used in the pool or a lack of proper maintenance. Cloudy water is a sign of high pH and the heightened pH also affects swimmers in the pool. A high pH level means the pool is too alkaline. When you find the pH level to be high, adjust it immediately, before others use the pool.
High Total Alkalinity
If the total alkalinity of the swimming pool is high, then it is almost a certainty that the pH level is high as well. The total alkalinity, or TA, is a measurement of the alkaline substances, including carbonates and bicarbonates, in the pool water. If the TA is high, the pH level will be difficult to adjust and the process of lowering the TA involves adding either dry or liquid acid to the pool water. It could be a process that takes days or even weeks, depending on just how high the TA level has climbed.
When the pH level is low, you add chemicals such as sodium carbonate to the pool water to raise the pH. It is vital to add the correct amount of this chemical, depending on how much you want to raise the pH, and just how much the volume of water in the pool is. If you simply dump the sodium carbonate into the water based on a low pH test, or you overestimate the amount needed, it will probably mean a high pH level.
Shocking the Pool
Shocking a pool with calcium hypochlorite is effective and popular because it provides a quick chlorine boost and is completely soluble. Calcium hypochlorite, which has a pH of 11.8, is also alkaline, which in turn causes the pool's pH level to rise. Lithium hypochlorite, which has a pH of 10.8 will also raise the pool's pH. When either of these is used regularly to shock the pool water, the water needs to be diligently tested, and the pH level adjusted regularly, to prevent the pH from rising over time.
Dangers and Correction
The high pH level endangers swimmers with burning eyes and noses, as well as itchy, dry skin. In addition to the pool's cloudy water, the chlorine used as a disinfectant will not work as efficiently, causing you to use more chlorine just to get the right amount of effectiveness. Scale that forms from the calcium and carbonates in the water hinder water circulation. Lower the high pH by adding either muriatic acid or sodium bisulphate to the water.
What Causes High Alkalinity in Water?
Water is the most important liquid for sustained life because of its neutral pH of 7. It replenishes the supply of liquids...
What Are the Causes of High PH Levels in Water?
The pH value in aquarium water refers to how alkaline or acidic the tank water is by measuring the hydrogen ions. Tests...
Why Is the Chlorine Level Low in My Pool?
Maintaining a minimum level of chlorine in your pool or spa is important for keeping the water clear, discouraging algae growth and...
How to Maintain the Correct Pool pH
Many people dream of owning a home with a swimming pool to lounge in on a summer day. Pool ownership may seem...
How to Lower pH in Swimming Pools
High pH reduces the effectiveness of disinfectants in pool water, but the addition of acidic chemicals quickly lowers the water's pH level.
How to Raise pH in Swimming Pools
Raising the pH level of swimming pool or spa water can be accomplished with basic chemicals, but it requires an understanding of...
Low pH & Alkaline Levels in a Pool
Alkalinity and pH along with chlorine are the three most important aspects of pool chemical maintenance. Each of these levels correspond with...
Does Rain Lower the pH Level in Pools?
The pH level of water represents the acidity of the water. A high pH means that the water is more alkaline, while...
What Causes High Alkalinity in Swimming Pools?
The maintenance of alkalinity levels is an important aspect of keeping your water chemistry in balance. Only a few factors can actually...