GEO Smart Greens Replacement Substrate

The GEO Smart Greens clay pebble root medium is a natural material for encouraging heathy root growth.  It will last indefinitely if properly rinsed between uses, and occasionally sterilised with diluted hydrogen peroxide. However, there may be some loss of pebbles in dense root mats and some users may find it more convenient to replace the medium periodically to save cleanup time. One pack is enough medium for each tray in the original kit.

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