• KELVIN® Classroom Hydroponics System™

    KELVIN® Classroom Hydroponics System™

    "I found to my surprise that my students gained instant interest in the area of bio-technology by working with the KELVIN® Classroom Hydroponics System."-Paul Frascatore, P.S. 40, Jersey City, NJ "In our hydroponics area, the students have...

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  • Rockwool, Cubes

    Rockwool, Cubes

    Rockwool growing medium can hold large amounts of nutrient solution and air for the best growth. Does not decompose. 1-1/2 x 1-1/2 in.Cubes, 98/pkg.

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