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Water Balance In Swimming Pools And How it Affects Maintenance
By Busy Door Guest Blogger | May 25, 2010
Attention: Water balance is very important to ensure that your swimming pool chemicals work properly and for as long as they should
Before adding pool chemical it is important that you read and familiarise yourself with the workings of your spa / pool and support equipment. Good water circulation and filtration are essential to achieving a safe and clear bathing environment.
The first step in treatment is to ensure good water balance, which will create the right conditions for bather comfort, chemical efficiency and equipment protection. The main criteria affecting water balance are calcium hardness, pH and Total Alkalinity.
Calcium hardness
Hardness is the measurement of calcium salts in the swimming pool or spa water and this will vary depending where you live. Low calcium hardness can cause damage to your pool materials. High calcium hardness levels (hard water) often leads to the formation of scale in pipe work and equipment.
these are guideline levels
Ideal calcium hardness levels are between 100 200 ppm (mg/l).
If the measurement is below 75 ppm (mg/l), use Hardness Plus
When the measurement is above 200 ppm (mg/l), apply Scale Inhibitor.
pH
pH can range from 1 to 14 where 1 is very acid and 14 very alkaline Make sure you keep your water within the 7.2-7.6 range which, because it is slightly alkaline, will protect equipment from corrosion and produce the optimum conditions for bather comfort
Ideal pH level for spas is between 7.2 7.6.
If the level drops below apply pH Plus
If the measurement exceeds 7.6 apply pH Minus
Note
These things] will cause the pH to fluctuate.
pH rises can be caused by this which causes chlorine products such as chlorine granules to lose effectiveness. Significantly greater doses of chlorine sanitiser are then needed This can be avoided by using Bromine Tablets, Bromine (HOBr) is a highly effective sanitiser, and it is stable over a much wider pH range than chlorine treatments.It is also less volatile than chlorine and will remain in the spa for a longer period reducing your hot tub chemical usage and ensuring hygienic conditions prevail.
Total Alkalinity
pH Changes are buffered by total alkalinity If TA levels are too low the pH will fluctuate widely.
High levels of TA will not only affect water clarity, but also make pH adjustments extremely difficult.
optimum Total Alkalinity is 100 ppm (mg/l) When it is below 80mg/l remedy it with Alkalinity Plus
When Total Alkalinity is above 140mg/l remedy it with pH Minus to reduce it
Water balance should be checked regularly and, certainly, every time you top up or refill your pool or spa.
Testing your water is easy, you just use test strips which are available online
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