Calcium Hardness ?

Total hardness and calcium hardness in pool water.
Scale, calcium buildup, hard water and scaling problems.
Andrew88

Calcium Hardness ?

Postby Andrew88 » Sat 10 Oct, 2009 22:21

Richard The Third. wrote:Nope.
But here is the formula for an idiot:
Sneek in a bathroom and look in the mirror. :lol:


What is your problem?


Guest

Calcium Hardness ?

Postby Guest » Sun 27 Jul, 2014 10:01

chem geek wrote:To avoid foaming, you can raise it to 100-120 ppm. It doesn't have to be very high unless you have exposed grout in tile, plaster, etc. A vinyl pool does not need a higher calcium level. There is controversy over whether it is needed to prevent metal corrosion, but pH is the primary factor for metal corrosion (i.e. don't let the pH get very low -- keep it near 7.5 and not below 7.0 for any extended length of time).

So my 18 feet above ground pool does not need the calcium hardness raised?
chem geek
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Calcium Hardness ?

Postby chem geek » Sun 27 Jul, 2014 16:50

If you do not have plaster or grout exposed to the water, then you do not need calcium in the water.
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2381
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Calcium Hardness ?

Postby chem geek » Fri 12 Sep, 2014 22:41

Again, if you do not have a plaster pool or grout exposed to the water, then you do not need extra calcium. So if you have a vinyl pool you're fine. If you have a plaster pool you should increase your CH, probably to around 300 ppm.

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