expanded shale in gritty mix?

hairmetal4ever(Z7 MD)March 21, 2014

Can expandex shale take the place of crushed granite/Gran I Grit if the latter cannot be located?

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weirdflowers(5)

I don't know about expanded shale, but I used pea gravel from the landscaping department at Lowe's. It was pretty cheap and seemed to serve its purpose well, just needed to be sifted and rinsed.

This post was edited by weirdflowers on Sun, Mar 23, 14 at 19:51

    Bookmark   March 23, 2014 at 7:50PM
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calistoga_al ca 15 usda 9

For grit it is the size that is important. What is the size of "expanded shale"?

    Bookmark   March 24, 2014 at 9:24AM
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