Grodan Improved GR4 (Small 3" w/ Hole), case of 384

SKU RW287055 Category UPC 774783495659 (UPC-A)
25.25 lb 25.25 lb 25.25 lb
Quantity Price
1 - 16 $179.50
17 - 69 $169.93
70+ $163.40



The most popular rockwool (aka stone wool) for indoor growing, hydroponics and greenhouse speciality crops! Grodan GRO-BLOCK Improved, with Advanced Wetting Technology, has the optimal fiber structure and physical properties needed to grow more uniform and high-quality crops while using less water and nutrients.

Developed specifically for the early vegetative stage of large plants, the Improved GRO-BLOCKS GR4, Small 3″ w/ Hole allow for even water distribution throughout the height of the substrate which is the basis for a robust root system with greater capacities for water and nutrient uptake. Indoor growers will experience improved plant growth, including larger plant size, greater stem thickness, and bigger fruits and flowers.

• Even water distribution maximizes plant growth and development
• Rooting occurs several days faster, speeding up the time to harvest
• Ideal aeration at the root zone — prevents overwatering and root suffocation
• Contains no weed seeds, disease pathogens or insect pests
• Size: 3″ x 3″ x 2.6″ w/ hole, (8/strip – 48 strips/case), case of 384

Note: This item is for commercial use and is packaged as bulk, without retail wrapping or labeling.

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