So the real context of the discussion is are you being alarmists? I think most definitely you are. So I believe Carl is right when he suggests this forum is not for me. I quoted below to illustrate according to Ben just a few months ago that the engineer said a of PH 5-9 is ok. But what does the manufacturer know. The study went from a PH of 2-10 and said that it gets progressively more likely below 7 however other factors contribute ... these other factors such as high cl with no or low CYA are routinely recommended here with no qualification. At the end of the day it's just a swimming pool. In all cases the function of the liner was never compromised ... saying you have to do this or that right now or you WILL damage this or that is just (with due respect) a way to raise your self importance. I do have a last question ..how do I delete my account?
http://www.poolforum.com/pf2/showthr...yl-Pool-Liners
Ok, I got side-tracked, and called CGT. I'm ADD and eternally curious; whaddya expect?
Spoke to a liner product engineer, "Immanual + foreign last name" -- it bugged him that I couldn't understand his name, I so I gave up. After we spoke for awhile, he transferred me to "Carl Flieler" (sp?) => Carl Flee-ler who is the pool liner guy, but he wasn't in.
Anyhow:
+ OK pH range is 5 - 9
+ The idea of adding calcium carbonate scared him, because he said high pH is more damaging than low pH.
+ There are definitely variations in liner material quality, and there is imported knock-off material. But he thought the patterns (see website) are likely to indicate source fairly well.
Richard, you might want to talk to 'Flee-ler'.
Ben
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