Stonewool

Stonewool is a popular and economical hydroponic substrate because it is cheap, lightweight, highly absorbent, and extremely efficient. Our high-quality selection of stone/rock/mineral wool products also provide uniform distribution of water and plant nutrients. Products in this category include grow cubes of all sizes and grow starter plugs for sprouting and transplanting young plants without having to uproot or disturb your plants' vital root zone.

RedRock Grow Blocks

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RedRock Grow Slabs

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Grodan PRO A-OK Starter Plugs

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RedRock Round Propagation Plug PRO - Center Hole - 38mm/40mm - 1-1/2-Inch (Case of 2,000) (20 Cs/Plt)

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RedRock Round Propagation Plug PRO - Center Hole - 38mm/40mm - 1-1/2-Inch

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Grodan Improved Grow Blocks

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Grodan Gro-Slab - 6-Inch x 3-Inch x 36-Inch (12/Cs) (14/plt)

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Grodan Improved Gro-Block - GR6.5 Small - 4-Inch x 4-Inch x 2.5-Inch (Case of 216) (12/Plt)

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Grodan Improved Gro-Block - GR10 Large - 4-Inch x 4-Inch x 4-Inch (Case of 144) (12/Plt)

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RedRock Flowering Slab PRO - 25x20x10cm - 9.5-Inch x 8-Inch x 4-Inch - 10 cm Pre-Cut (x1) (Case of 18) (32 Cs/Plt)

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Grodan Improved Gro-Block - Hugo - 6-Inch x 6-Inch x 6-Inch (Case of 64) (8/Plt)

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Grodan Improved Gro-Block - Jumbo - 6-Inch x 6-Inch x 4-Inch (Case of 64) (12/Plt)

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Grodan A-OK Starter Plugs - 1.5-Inch - Unwrapped - Sheet of 98 (Case of 30) (8/Plt)

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Grodan A-OK Starter Plugs - 2-Inch - Unwrapped - Sheet of 50 (Case of 30) (8/Plt)

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RedRock Grow Slab PRO - 90x15x7.5cm - 10 cm Pre-Cut (x3) - 36-Inch x 6-Inch x 3-Inch (Case of 16) (16 Cs/Plt)

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Grodan Expert Grow Slabs

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RedRock Grow Block PRO w/ 38/40 Hole - 15x15x10cm - 6-Inch x 6-Inch x 4-Inch BULK PALLET (Pallet of 704) (52 Plts/Truckload)

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Grodan Grow-Cubes - Loose Box - 5.7 Cubic Feet (8/Plt)

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RedRock Starter Block PRO w/ 38/40 Hole - 10x10x10cm - 4-Inch x 4-Inch x 4-Inch BULK PALLET (Pallet of 1,584) (52 Plts/Truckload)

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RedRock Grow Block PRO w/ 38/40 Hole - 15x15x10cm - 6-Inch x 6-Inch x 4-Inch (Case of 64) (20 Cs/Plt)

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RedRock Starter Block PRO w/ 38/40 Hole - 10x10x6.5cm - 4-Inch x 4-Inch x 2.5-Inch BULK PALLET (Pallet of 2,592) (52 Plts/Truckload)

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RedRock Starter Block PRO w/ 38/40 Hole - 10x10x6.5cm - 4-Inch x 4-Inch x 2.5-Inch (Case of 216) (20 Cs/Plt)

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RedRock Starter Block PRO w/ 38/40 Hole - 10x10x10cm - 4-Inch x 4-Inch x 4-Inch (Case of 144) (20 Cs/Plt)

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RedRock Grow Block PRO w/ 38/40 Hole - 15x15x13.5cm - 6-Inch x 6-Inch x 5.3-Inch (Case of 48) (20 Cs/Plt) (30 Plt/Truckload)

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Grodan Pargro Quick Drain Blocks - Biggie - 6-Inch x 6-Inch x 6-Inch (Case of 64)

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Grodan Improved Gro-Slab - 36-Inch x 6-Inch x 3-Inch - Not Cut (Pack of 12) (10/plt)

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Grodan A-OK Starter Plugs - 1.5-Inch - Wrapped - Sheet of 98 (Case of 30) (8/Plt)

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RedRock Round Propagation Plug PRO - 50 CELL TRAY - Center Hole - 38mm/40mm - 1-1/2-Inch (Case of 1,300) (26 Trays/Cs) (20 Cs/Plt)

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Grodan Improved Uni-Slab - 9.5-Inch x 8-Inch x 4-Inch - Precut (Pack of 16) (18/Plt)

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Grodan Improved Gro-Block - Big Mama - 8-Inch x 8-Inch x 8-Inch - No Hole (Case of 18) (12/Plt)

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