Can they be had? I like the convenience of the dispenser, but don't want to get the CYA levels too high.
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Can they be had? I like the convenience of the dispenser, but don't want to get the CYA levels too high.
.
Last edited by PoolDoc; 09-03-2014 at 07:02 PM. Reason: fix title
Sure. There are Cal-Hypo based tablets, that add calcium rather than CYA. Unfortunately they tend to dissolve rather quickly and turn to mush, unless you get the type in a plastic capsule. And you MUST NOT put them in the same feeder as Tri-chlor tabs (the ones that add CYA).
But they are, IMHO, a really lousy alternative to Tri-Chlor tabs.
Carl
As Carl noted, cal hypo tabs don't perform as well as trichlor tabs, in a feeder. I've never tried them in a floater, so I can't say how they work.
There are some VERY expensive feeders designed for commercial installations, but they aren't very practical for residential use.
But . . . if you are looking for a 'easy' method, running a pool the way the chlorine gas 'shooters' in Arizona, California and Texas do: adjust the CYA to 100 - 150 ppm and dose weekly with 10 - 15 ppm of chlorine. They used to use various algaecides, but you if you maintain very low phosphates (PO4 < 0.1 ppm) you can accomplish the same thing. (You don't want to have to use chlorine as an anti-algae treatment when CYA > 100 ppm, since that requires FC levels as a high as 50 ppm).
PoolDoc / Ben
I put the Cal-hypo tabs in my skimmer once and in 2 hours they were mush and the skimmer was jammed up....Not a fan!
Carl
I don't think that's typical of all CH tabs. However, you could work around that in several different ways, such as putting them in a perforated plastic bottle that's resting in the skimmer.
Interesting idea, but I haven't had to mess with it in years.
Carl
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