How To Adjust CALCIUM HARDNESS In Pool Water
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- Опубликовано: 10 мар 2024
- From www.swimmingpoolsteve.com/pag... this video talks about one of the lesser common pool chemistry variables that you might need to adjust in your pool water - calcium hardness. Calcium hardness is the measurement of the amount of calcium and magnesium in your pool water and should be in the 200 ppm to 400 ppm range for most swimming pools.
To raise calcium hardness you purchase calcium flakes from a pool and spa store and dissolve them in a bucket of pool water before adding to the pool. Always follow the instructions for the product you are using. Every pool chemical sold comes with instructions on the label for how to use, and how much to use in your pool to achieve the desired change in water chemistry. Be aware that calcium generates heat when you mix it with water so never mix with your hands, and always store calcium hardness in a secure, dry area.
To lower calcium hardness in your water requires dilution of your pool water with fresh water than has less calcium hardness. If you use cal-hypo type of pool chlorine this will leave a calcium residual in the water which is how your calcium hardness levels can climb over time.
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We just built a pool in north Texas. The local pool store that does water testing has been telling me for a month that the calcium hardness is low. I just put about 10 pounds of calcium flakes in it this weekend. I’ll test it again in another week and add accordingly.
Love your content BTW!
SURE APPRECIATE THE INFO. YOU'RE AWESOME
Great installing information, thanx so much for sharing your knowledge...
I deal with a lot of well water pools on my route. During the summer dealing with evaporation and auto fill I typically (weekly ) have to use muriatic acid then bring the pH back up.
Muriacric acid lowers pH
What's your angle on the Taylor balance wheel, used to come with the K-2005 kit?
When I was working in a different location, water came out of the tap at 700 ppm calcium.
The wheel said water was balanced at alkalinity 70, pH at 7.0
But that was a long time ago. Still good?
I would think the wheel is looking at an LSI calculation for saturation index and trying to offer the closest "neutral state" to what your water condition is. Anything from Taylor is probably a good thing...they are the gold standard for water testing still to this day.
is there a different hardness level for concrete pools over liner or fiberglass pools?
Well, kind ot. All are recommended to be at 200 to 400ppm but with concrete pools if you let it get higher because you use cal hypo chlorine which builds a calcium hardness residual, there is less immediate sign on problems. Still the saturation index is affected by high hardness numbers, but the interior surface does not show it/ feel it like fiberglass gelcoat or a vinyl liner would. In short, 200 to 400ppm, ideally.
How important is it to maintain the calcium hardness at 200-400 ppm for a vinyl liner pool with no heater?
It is an integral part of your water balance and your LSI measurement (saturation index). Too little and you can have water pulling minerals from metals and other materials. Too much and you will have scaling issues.