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I have a vortex filter and I've used up a box of " Diatom Filter Powder "
that I bought with the filter.
I went to the pool supply and bought a 25 lb bag of "diatomite" to use but
when I got home I read the label and found that the ingredients are
diatomaceous earth and silica.
Is this the right stuff to use or is diatomaceous earth available by itself
or is the silica always in there from when they mine it?
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