Grodan Delta 4 3" x 3" x 2.5" Gro-Blocks No Holes - 16 Blocks (2 Strips of 8) *Strips may be folded in half for shipping purposes.
Grodan's Delta 4 Gro Blocks Measure 3" x 3" x 2.5" - perfect for transplanting seedlings and cuttings. Once roots reach 1" long these 3" Gro Blocks can be used as a transplant for starter blocks.
- Block Size: 3" x 3" x 2.5"
- Note: Blocks come without holes
- Strip of 8 gro-blocks
Stonewool is recognized the world over as the ideal hydroponics growing substrate. Seeds or cuttings are started in these Grodan Gro-Blocks and, once rooted, the blocks are transferred to a larger stonewool slab. Gro-Blocks can be planted directly into containers for soil gardening as well. This is a strip of eight 3"x3" x2.5" Gro-Blocks, each with pre-formed holes. Grodan stonewool is known for its quality, consistency and performance.