CH on 20ppm?

[todd.scallions]

I see that it says CH doesn't really matter for vinyl liners but there is still a recommend range of 200 & 400ppm. I've tested pool water twice and tested the fill water and my CH readings are coming out at 20ppm. Is there any danger for having such a low CH reading? Is there any benefit to bringing it into the recommended range?

 

[jblizzle]

Where do you see a range of 200-400 for CH for vinyl pools?

Even 0 is fine in a vinyl pool ... so I would not worry about it.

 

[Richard320]

Low CH can contribute to foaming. Other than that... who cares? If I were you, I'd crunch some numbers and see what the cost per FCppm is between bleach and Cal-hypo, and if it was cheaper, use some Cal-hypo. I got a flier in the mail, all those pucks and powders are on sale right now!

 

[todd.scallions]

I've already read that it didn't matter for vinyl liners I was just wondering if it was normal for such extremely low CH readings. I just assumed that my water would be somewhere in that general range.

 

[todd.scallions]

Maybe I should have worded it differently. I wasn't asking "hey will 20ppm damage my liner" i was asking is there any negative impact to having such a low reading water quality wise and is there any benefit to having a higher reading. So it only effects foaming and that's it. Thanks for the help.