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Old 22-Oct-2005   #4
Aaron_K
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Join Date: Mar-2004
Country: England
Posts: 1,477
Hi Syburn,

The first picture does look kinda like hydroton although I guess any expanded clay pellet will look roughly the same. Perform the test that Jerry mentioned and if they don't collapse then they will be fine for using in your soil. I use hydroton at the base of some of my pots and containers, just to add that bit extra drainage. I used the hydroton on its own as a soil with a ligustrum and Japanese maple. They seem to love the stuff, throwing out new roots all over the place.

All the best,

Aaron
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