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can I use lava rocks?
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01-30-2009, 01:01 AM
Ron
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Join Date: Jan 2009
Posts: 1,285
Hi Greg You have to make sure the lava rocks have been sterilized because of the toxins that pure lava rock has. I would water every 20 minutes or so for 5 minutes and maybe more often as the plants get bigger or it gets hotter.
Ron
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