Hydroponics Forums Discussions - what kind of rocks or clay balls

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porous

02-12-2009 04:50 AM

what kind of rocks or clay balls

what kind of rocks or clay balls do i put in my hydo-system

Ron	02-12-2009 04:51 AM

grow rocks - a porous clay kiln fired material that can be used over and over again after cleaning with a 10 percent bleach solution.

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