What Rock Is Used in a Hydroponics System?

Hydroponic systems use various types of rocks including rockwool (Basalt rock), perlite (volcanic rock), diamtomite (sedimentary rock) and clay pellets (shale rock) in place of soil for a growing medium.

Keywords: Rockwool, growing medium, hydroponic

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Diane Dilov-Schultheis has been writing professionally since 2000. She is a food and travel writer who also specializes in gaming, satellites, RV repair, gardening, finances and electronics. She is a member of the Society of Professional Journalists and has been published online at the Travel Channel and Intel.