Home > Products > Lawn & Garden > Indoor Gardening > Growing Media > Speedgrow Green 3x3x2.5" Blocks 14Pk Retail (16/Case) Speedgrow Green 3x3x2.5" Blocks 14Pk Retail (16/Case) Log in to see availability and pricing. Item Number: SPGR29500006BFG Case Qty: 1 Min Qty: 16 UPC: 049121013957 Manufacturer: Speedgrow Green MSRP:$14.99 Product Description Product Availability Speedgrow® Green Stone Wool Growing MediumStarter Cube - 2.5in / 3in x 3in x 2.5in/ 14pk RetailA natural alternative to growing plants in traditional mediums. Speedgrow differs from other stone wool products that may contain phenols, acrylics and artificial dyes in that it incorporates an all natural, bio-based binder. It offers a unique combination of high water absorption and good drainage for an optimal water /air ratio. Speedgrow provides the grower a clean, inert and disease free rooting medium that is easily adjusted. Ideal for hydroponic growing. Log in for warehouse specific availability. You may also be interested in... MSRP: $18.29 Monterey 2.5# Sluggo OMRI Item #: MLGNLG6500Mfg #: LG 6500 Min Qty: 6 Click here for pricing and availability. MSRP: $25.99 PlantBest 10x20 Seedling Heating Mat Item #: PPR3462Mfg #: 3462 Min Qty: 6 Click here for pricing and availability. Speedgrow Green Slab 40x6x3" (224/Pallet) Item #: SPGR29430001Mfg #: 29430001 Min Qty: 1 Click here for pricing and availability. Speedgrow Green Big Cube 4"x 2.6" (100/Case) Item #: SPGR29500001Mfg #: 29500001 Min Qty: 1 Click here for pricing and availability. MSRP: $10.99 Speedgrow Green Big Cube 4" 5-Pack (15/Case) Item #: SPGR295000010RMfg #: 295000010R Min Qty: 15 Click here for pricing and availability.