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Magnesium oxide
01 pH at 77°F (25°C)
8 ounces makes 40 gallons
and comes with
Active Aqua Grow Flow Expansion Kit, 6 Pot, 2 gal commercial-greenhouse-fixtures Magnesium oxideThe Grow Flow Expansion Kit includes six growing modules, each consisting of a round 2 gallon pot with " fittings, an inner bucket, and all necessary connectors and tubing. Each pot features concave bottom with multiple drain holes for better water flow. *A control unit and reservoir (sold separately) are required to use this expansion pack
