Low calcium levels, plasticizers in vinyl liners, leaching cobalt from fibergalss?

[ldsmommyof12]

So, with all the above posts, please tell me the basic, final idea on calcium raising in a vinyl ag pool. I just tested and my calcium needs 5.5 pounds. Should I just disregard this since I have a vinyl ag pool? Thanks,

[CarlD]

So, with all the above posts, please tell me the basic, final idea on calcium raising in a vinyl ag pool. I just tested and my calcium needs 5.5 pounds. Should I just disregard this since I have a vinyl ag pool? Thanks,

Yes. Waste of money, potential problems.

MWSmith2 is addressing a theoretical problem that MAY be true. It may turn out that corrosion can be reduced with a little calcium--or another metal. He's talking about the electrolysis principles...Boat owners have for years had "Zincs" on their boats for the water to "eat" rather than their bronze propellers.

But Michael is tossing out a hypothesis for discussion. It may be turn out to be true, may not.

Now as to your "needing 5.5 pounds": what is your current Calcium level and why has that much been recommended to you, other than to generate a fund transfer from you to your pool store?

If your calcium is higher than 0, say, around 100ppm (low for concrete, fine vinyl) even Michael's theoretical concern shouldn't apply.

So post that number and we should be able to relieve your mind--and save you from getting "Pool Stored!"

[mwsmith2]

Yeah, it looks like if you've got 100 - 150 ppm you should be fine. More than likely they are trying to get you up to Ca levels for a gunite/plaster pool, which you simply don't need if you have a vinyl pool.