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25lb bag Hydroponic Aquaponic Sterile Slate Grow Bed Media.
PH Neutral= once rinsed or cycled in new systems this product is PH neutral forever.
High Surface Area= Getting air to the roots while keeping the moist in the name of the game and it has incredible surface area and voids, allowing for even more oxygen into your grow bed, and more room for bacteria leading to better nitrification
Economical= never breaks down and can be reused.
Natural= is a natural meta-argillite slate, very high temperatures which produce sterile and inert finished aggregates.
LIGHTWEIGHT= has a 50% void ratio by volume, yet it wont float like other media. While dry weight is slightly heavier than clay products, when saturated, is lighter than clay and easier to work with.www.peedeeorganics.com