How to Lower Ph in Pool Using this Alkalinity Remedies
If you want to know how to lower PH in pool water, you will first have to understand how pH is measured. The recommended range of pH for swimming pools is 7.4 to 7.5. Any ingredient added to the pool water, be it sunscreen, leaves or bugs or even sweat can cause the pH level to change. If the pH becomes too acidic (towards alkalinity) the pool may become cloudy or it may cause damage to the lining or plumbing fixtures; something which can be expensive to repair.
One of the factors that influence the pH level in the pool is the presence of a “biochemical oxidizer” known as sodium bisulfate. This chemical can be found in many pool supplies including chlorine, shock treatment, anti-chlorine, anti-freeze and other chemicals. However, not all of them are equally effective in neutralizing the pH level in the pool.
If the area around the pool is heavily chlorinated, the alkalinity will be much higher than in other parts of the pool. Therefore, using an alternative chemical in the replacement of the existing pool chemical can help to reduce the overall PH levels in the pool. The best chemical to use is one that will create a pH-balanced environment with the necessary acidic and alkalinity levels. Unfortunately, most of these chemicals are corrosive and therefore need to be used in very carefully measured amounts and in appropriate conditions.
Some of the more effective alkalinity lowering alternatives include lime rock, soda ash and magnesium sulfate. Lime rock contains calcium carbonate, which acts as a buffer against alkali. Magnesium sulfate reacts with the hydrogen in the pool water and produces sodium hypochlorite, which is a stronger poison than lime rock. This process is also a major contributor to the alkalinity drop in the pool water. Once you have determined the right amount of alkalinity to set the water PH to, adding the correct amount of bleach will maintain it.
The type of pool chemical will determine how much PH the swimming pool will be able to maintain. Most people use muriatic acid to maintain the required alkalinity in their pools. However, this acid is poisonous if swallowed so it is best to only bring this into the pool when the proper amount has been added. If you add the wrong amount, you may end up killing your fish or plants by overdose.
Another good alternative to muriatic acid is the use of sodium azide. This is the same as the soda ash used to reduce the pH level in the pool water. It is however, cheaper to use and more effective in the long run. When the chlorine and water get stale, sodium azide acts as a stabilizer and keeps the levels of alkalinity steady. It is good to use this on a regular basis to ensure that your pool always has alkalinity.
Baking soda is also another inexpensive option when it comes to how to lower the levels in a swimming pool. Like the soda ash, baking soda also acts as a stabilizer. However, it can cause irritation to sensitive skin and eyes. So, it is best to use this in restricted quantities. Too much usage can also cause the alkalinity to drop too much and cause for the pH levels to rise.
Using dry acid is the final and best way on how to lower pH in pool. There are two kinds of dry acids that you can use to achieve the desired ph level you want in your pool. They are muriatic acid and carbonate of soda. Both of these are mixed with water and then stirred. After this, they are left to sit and the alkalinity and pH of the waters are determined accordingly.