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Ful-Humix prevents the tie up of nutrients and trace elements through chelation and complexing
The mesh size is made up of how many holes are in a square inch of screen
User Guide for VidaWool Blocks
herbs and fruits
If applying as foliar
Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" - Case of 256 Select Rockwool Type:GR22 Jumbo w/ Hole 6"x6"x4" - Case of 64 Ful-Humix prevents the tie upNew and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water
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