I have a vinyl pool my calcium hardness is only 70 I am being told to raise it because ideal 200 -400 and min.is 100 . they say if you don't it will eat up my ladders and any parts of metal in the pool is that correct. can anyone give the truth.
Store says Increase CH in vinyl pool
- Thread starter brundel
- Start date
For vinyl pools, CH is largely irrelevant. 50 to 350 is fine for a vinyl pool, even higher is fine too. Lies, lies and ****ed lies. No reason to raise your CH.
- May 23, 2015
- 24,381
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Calcium hardness and the various saturation indices that are calculated using CH values (CSI and LSI) have absolutely nothing to do with metal corrosion. See this thread for a very detailed discussion. This is the money-quote (emphasis and abridgment added for brevity) -
So the Pool Store is telling you a bunch of baloney about corrosion. And, as stated in the many replies, your CH is absolutely fine for a vinyl pool.
So the Pool Store is telling you a bunch of baloney about corrosion. And, as stated in the many replies, your CH is absolutely fine for a vinyl pool.
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Supporting what the other responders have stated...
Your CH is fine - no need to adjust it.
Your CH is fine - no need to adjust it.
I concur with the other. My recommendation would be to buy your own recomended test kit and stay away from the pool store.
I've had zero ch for 5 years and have had absolutely no problems. I started it as a test, and I think 5 years is a pretty good test.
hummm... I trying to thing of something of something brilliant or dazzling to say, but its Saturday morning and I have to think too hard at work, so Im taking a break on thinking.
So, in regard to your vinyl pool needing CH, I will just say 'hogwash'!
So, in regard to your vinyl pool needing CH, I will just say 'hogwash'!
Too bad you're so far away. You could come over with an empty bucket and get some of my pool water and raise the CH in your pool for free.
It might be interesting to note that auto manufacturers prefer there be no Calcium in the radiator coolant. And they deal with interesting combinations of iron, steel, brass, copper, and aluminum.
The pool store clerk is just following the preprinted guidelines. You need Calcium because people with plaster pools need Calcium and the pool store needs the sale.
It might be interesting to note that auto manufacturers prefer there be no Calcium in the radiator coolant. And they deal with interesting combinations of iron, steel, brass, copper, and aluminum.
The pool store clerk is just following the preprinted guidelines. You need Calcium because people with plaster pools need Calcium and the pool store needs the sale.
n240sxguy
Well-known member
ewkearns
0
I added calcium to my liner pool. Fill water was CH 20, so when water was balanced I still had a CSI of -1.11. The quoted article seems to discuss positive CSI values. I understand the need for calcium in a plaster pool, however, I had believed that the CSI was of some value when considering a vinyl pool and associated hardware. Is that not the case?
ewkearns
0
OK, got that, but maybe I need to ask this question, instead: "Is there any index to describe the aggressiveness of pool water towards metals, such as those found in pumps, filters, heaters, etc?"
- May 23, 2015
- 24,381
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
See the link in my previous post. That thread has a detailed discussion of different indices and has some web links to external sites on corrosion of metal.
Problem with metal corrosion indices is that they are specific to different metals and their alloys and usually require the measurement of dissolved oxygen, sulfur compounds and other chemicals that one does not typically test for in pool water. They are also typically specific to closed water systems (steam boilers etc) and not open systems like pools.
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Don't believe the pool store. I had this exact same issue too. I now have a bucket of CH that just sits there.