Whether starting your seeds and cuttings in A-OK Starters, it is a good idea to transplant into the Grodan Delta Rockwool Cube. You know it’s time to transplant to the Gro-Block when roots coming out of the starter are about 25mm long. Just place your A-OK into the 10cm block with Macro hole and watch your plant flourish.
Grodan Rockwool has an incredible capacity for absorbing nutrient solutions while letting enough oxygen through for rapid plant growth. The design of the plug discourages tangling of roots.
Grodan Rockwool is produced from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making various kinds of fibers. The purpose is to toughen the requirement of the plant within the different plant stages.
- Ideal Air / Water Balance
- Strong root growth throughout the entire block
- Supports plant through different plant stages