Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 microbial fertilizer Rated life span 20

Rated life span 20

Reflector made of German aluminum at 95% reflectivity

16-32 VDC loop powered

Tear down in 15 secs

Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 microbial fertilizer Rated life span 20Grodan 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