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what is a growing medium?
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02-14-2009, 06:40 AM
Ron
Senior Member
Join Date: Jan 2009
Posts: 1,285
grow rocks
, perlite, rockwool, sand, air, or any inert material free form harmful chemicals that could be harmful to the plants. You add the
nutrients
to the medium for your plants to use. Your plants don't get their nutrients from the medium.
Ron
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