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Growstone GS-1 foam glass stones named High Times Hot Product!

High Times magazine named Growstone GS-1 foam glass stones as a Hot Product for November 2017.

“The medium in which you choose to grow helps determine the outcome and output of your garden. The new GS-1 Hydroponic Substrate from GrowStone is an Earth-friendly and extremely porous aggregate that absorbs and stores water while allowing plenty of capacity for the oxygen necessary to your roots. The rocks are quick-draining and made from 100% recycled glass instead of non-renewable mined obsidian.”