Chlorine pucks

[hancop]

I hear all this talk about not using chlorine pucks as it will continue to raise your CYA values. Can you not purchase pucks without CYA in them, that won't cause this to happen ?

Thanks

[Sherra]

Not anymore (none that anyone on here's been able to find anyway)...a few years ago you used to be able to get the non-stabilized pucks, but the "big" manufacturers quit making them in leu of the more expensive (bigger profit margin) stabilized pucks that they can sell for more.

[aylad]

It's not that they've quit making them in lieu of the more expensive pucks--the other type of puck was a different chemical--calcium hypochlorite--and the manufacturers changed the packaging to a puck without a plastic capsule, which dissolves into mush pretty quickly. The trichlor pucks are the ones that are stabilized, and the stabilizer is what keeps them from getting mushy like the other type.

You can still get both types, but you cannot use the cal hypo puck in an inline feeder.

Janet

[hancop]

Can you use a cal hypo puck in an offline feeder ?

[aylad]

My understanding is that when the chemical pucks get wet, they put off varying degrees of heat and gasses, and the reason you can't put cal=hypo in a feeder that's not designed for it is that the trichlor feeders aren't equipped to handle the heat and pressure buildup of dissolving cal-hypo. So the short answer to your question is, no, don't put cal-hypo pucks in a feeder unless it's specifically designed for cal-hypo.

Janet

[Sherra]

Just found the HTH Duration (cal-hypo) "capsules" on this web site (I get their "sale" e-mails, but never buy anything from them).
http://www.poolsupplies.com/Product_...neTablets.html