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Swimming Pool and Spa Water Testing
Clark Rubber is Australia’s Local Pool Shop. And your local Clark Rubber pool shop can advise you on all your pool and spa needs. Just bring in a sample of your pool or spa water and we’ll test it, absolutely free! It’s the best and most inexpensive way of keeping your pool and spa safe and the water always sparkling! Come in for a free water test today at your nearest Clark Rubber store.
There are a couple of key essentials for safe, sparkling water, and it all starts with the correct pH level in your pool. The pH affects three areas of swimming pools:
1. Swimmer Comfort
The pH of blood is around 7.5, and blood comes closet to the surfaface of the human body in your eyes. So, if you swim in water that is too far away from 7.5, guess what, you'll get sore eyes! Lots of people think its the chlorine that causes red eyes, but chances are, it's because the pH level is incorrect. This is why you need the pH between 7.4 - 7.6!
2. Chlorine effectiveness
How well chlorine works in water, depends on what the pH level is. At a pH of 8.0, chlorine is only 20% effective! That means green and cloudy water and dangerous bacteria. The higher the pH, the less effective chlorine is. At a pH between 7.4 - 7.6, chlorine works best.
3. Water condition
When the pH level is too high (above 7.8), water becomes more alkali. What this means for your pool is the water can hold fewer chemicals in solutions, and starts to turn them into solids. This is called precipitation. Your water can turn cloudy, and you will start getting calcium build ups on the floor and the wall of your pool. You will also need to clean your filter more often. The pool floor and walls can also become rough and scaly.
When the pH is too low (below 7.0), it becomes acidic. This makes the water corrosive, and metal parts in and around the pool can rust and it can actually damage the interior of your swimming pool. For a vinyl lined pool it can cause the liner to become wrinkly and unsightly.
Ok, so we've seen just how important maintaining a pH between 7.4 - 7.6 really is. So how do you keep it there? Well, thats where water balance comes in. Water balance describes the condition water is in, in relation to maintaining a correct pH level. The pH of the water will always want to change. Whenever we add chemicals to the pool, They all can affect the pH. Bathers can also affect it just by suntan lotions etc. Wind borne debris can also affect the pH.