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6 pound per gallon of water
montmorillonite
Black Spot
and poses no long term hazard when used as an anti-caking agent in your animal's feed
Grodan AO 25 x 25 x 40 mm Rockwool Cubes Size:2 Sheets 6 pound per gallon ofGrodan AO Rockwool cubes 1" X 1" X 1. 6" (25 X 25 X 40 mm) Tapered to bottom (connected on top) 10 mm diameter X 10 mm deep seed hole 200 cubes per sheet Pollutant free Pathogen free Does not lock up nutrients Does not release substances into water or nutrients Designed specifically for irrigation efficiency and uniformity Holds the perfect ratio of water to air that the plant needs Recyclable Case: 30 sheets 6,000 cubes. Rockwool or stonewool is a