> Anyone ever tried crushed brick? Do you think that it would have the same
> properties as this fractured clay? I have tried it in a 300 gallon with
> several aponogetens and VHO lighting but I had no success. It was several
> years ago and I am must smarter now ;-)
>
I've been giving some thought to trying powdered lava rock. It should contain
lots of minerals for plant growth. Any body like to comment on this? You can
go to the place where they sell lava rock in bulk and at the bottom of the
pile is always s a layer of lava rock powder. it can be black or brown.
Moon
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