Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 cloning-&-seed-starting This powerful and versatile commercial-grade

This powerful and versatile commercial-grade system allows users to select the most appropriate light intensity level for their particular setup

3 Year warranty

Flush your substrate regularly to prevent rest

This quality SunGro product is recommended where high air capacity and fast drainage are needed: during winter months

heat lamps

Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 cloning-&-seed-starting This powerful and versatile commercial-gradeGrodan Stonewool (rockwool) is made 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 different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen