Alkalinity in Pools – Why’s it So Important and How to Control


Alkalinity in pools is an extremely important topic as it’s what helps  prevent sudden pH changes. Total alkalinity is a measure of alkaline substances  in this case, ionic compounds, that act as buffers that resist pH change.

Don’t worry, this is just a bunch of chemistry and scientific mumbo jumbo  that you really don’t need to know. What is important to understand is that  alkalinity helps stabilize the pH balance in your pool, and keeping it within  normal range can save you a lot of headaches as well as solve a lot of  problems.

The recommended range for a swimming pool’s total alkalinity is between 80  and 120 parts per million. Any good pool testing kit will let you determine the  range, and it’s important to test often.

So, when it comes to alkalinity there are really only 3 states in can be in:  Too High, Too Low and Just Right.

Low Alkalinity With low alkalinity your pH levels can swing back  and forth between too high, and too low. It’s not uncommon for these numbers to  shift drastically causing an unbalance in your pools pH.

Some problems that are associated with this include: -Chlorine  inefficiency -Metal Corrosion -Pool Staining -Scale

You can easily raise a pool’s alkalinity by using a chemical called sodium  bicarbonate which is, baking soda. The recommended dosage is 1.5 pounds of  sodium bicarbonate per 10,000 gallons of water. If you’re unsure how much water  you have you can find a good estimate by using this formula:

Average Width x Average Length x Average Depth x 7.5

Add the amount you need with your pump running, to make sure the chemicals  are mixing nicely. Do this once every 4 days until your alkalinity becomes  stabilized.

High Alkalinity With high alkalinity your pH will generally be much  higher than normal as well. A good sign that you’re dealing with high alkalinity  is having cloudy swimming pool water.

Other problems include: -Reduced pool circulation -Clogged  Filter -Rough Surfaces

Since your pool is too alkaline the best way to correct this problem is by  using an acid. For swimming pools we either use muriatic or sodium bisulfate.  You can purchase either at any swimming pool and spa store.

The best approach I’ve personally found with this is to first begin by adding  enough acid to bring your pH balance down to 7.0. Then, let the pool sit for  awhile until the pH climbs back up to around 7.2. Repeat this process until your  pool alkalinity seems to have stabilized, but be sure to follow the directions  on whichever acid product you decide to go with so as not to add too much  acid.

Alkalinity in pools is an important part of swimming pool  chemistry. Poor pool maintenance can lead to sudden shifts, but that’s probably  not your fault. The truth is, so called pool “experts” will give you bad advice  in order to make you buy their chemicals and equipment, when really it isn’t  that hard to take care of a pool.

Article Source: http://EzineArticles.com/2787630

Print Friendly


Providing Pool Cleaning and Service to Palm Beach County:

Hypoluxo, Juno Beach, Jupiter, Lake Worth, Lantana, Manalapan, Loxahatchee, North Palm Beach, Palm Beach, Palm Beach Gardens, Palm Beach Shores, Riviera Beach, Royal Palm Beach, Tequesta, Wellington, and West Palm Beach.