Hey all,

Can someone please! explain to me why one would still need calcium in a liner pool with either a heater or SWCG?

As long as the water isn't acidic, those vulnerable metal parts shouldn't be in danger, they're made for pool use. I understand about the Langlier index for a 'protective layer of scale' (and the arguments for and against ... so we don't need to go there, or do we?) There has been some argument for having cal in the water of a liner pool, Ben's take was that it wasn't needed, however - our manufacturer says to have > 100 ppm {are they just appeasing the calcium industry or the new NSPI?}, but Ben still said to have cal in the pool with a heater--- ---- What is the calcium supposed to do??

While we're talking about calcium: why is my antacid (for my heartburn) calcium carbonate? (I don't take the aluminum stuff [nor use anti-persperant] because of the 'aluminum/ Altzhimers' corelation) I realize that a baking soda mixture could take care of the heartburn, but it doesn't come in fruit flavors (is the calcium needed to keep them in solid form, as opposed to the bi-carbonate powder?)

The folks I want to hear an answer from know who they are (I almost started a list... but to list the folks here who know chemistry better than I would have required me to double the 'word count' and I would have inadvertantly left out some {I don't want to offend any potential source of info } and I would like any thoughts from the people who know the answer that I couldn't name)