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Grow Rocks / Rockwool

  • Hydroton PLANT!T Clay Pebbles 10L 4mm-16mm

    PLANT!T horticultural clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure...

    Our Price: $12.95
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  • Grodan Gro-Slab 8"x36"x3"

    Grodan Stonewool is a proven hydroponics growing medium preferred by garden enthusiasts everywhere. This 36" x 8" x 3" Delta Expert Gro-Slab is perfect for "blocking on" smaller stonewool plugs and blocks to accommodate the final stages of plant growth...

    Our Price: $9.95
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  • Hydroton PLANT!T Clay Pebbles 40L 4mm-16mm

    Hydroton PLANT!T Clay Pebbles 40L 4mm-16mm

    PLANT!T horticultural clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure...

    Our Price: $29.95
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  • Grodan Rockwool 4x4 w/ Hole

    Known for its quality, consistency and ease of use, high-performance Grodan stonewool is used by hydroponics gardeners the world over. Seeds or cuttings are started in these larger Grodan Gro-Blocks and, once rooted, the blocks are...

    Our Price: $9.95
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  • Grodan Rockwool 6 x 6 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    Our Price: $3.95
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  • Grodan Rockwool 3 x 3 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    Our Price: $5.95
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  • Hydroton Original Expanded Clay 10 Liter

    Strong pebble structure doesn't crush Color packaging 8-16mm pebble size range Measures 16-4/5-inch length by 12-2/3-inch width by 3-2/7-inch height Hydroton grow rocks Strong pebble structure doesn't crush Records high and low points for both...

    Our Price: $13.95
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  • Grodan Grow Chunks 2 cf Bag

    Light, airy and versatile. Grow-Chunks™ are about 3/4 in square each and can be used in pots, around blocks or alone. They are easily combined with other media, such as layering with coco fiber or clay pellets. They can also be combined with soil...

    Our Price: $44.95
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  • GRODAN GRO-WOOL, 45 lb

    Granulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water absorbant granulate to peat mixes at 25-50% volume increases water holding capacity and aeration, improving plant growth and shelf life...

    Our Price: $80.95
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  • Grodan Rockwool 4x4x3 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    Our Price: $8.95
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  • Grodan UNI-SLAB, 9.5" x 8" x 4"

    Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growers. They come in clearly marked biodegradable UV resistant sleeves for comfortable handling and algae...

    Our Price: $5.95
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  • Hydroton Original Expanded Clay 50 Liter

    The original Hydroton® brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight...

    Our Price: $37.95
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