Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial food-storage The Safer Brand insect killing

The Safer Brand insect killing soap utilizes the power of potassium salts of fatty acids (insecticidal soap)

Premium plus reflector made of German aluminum 95% reflectivity

which promotes production of ATP

Heavy Duty Base -  serves as the reservoir for auto watering

Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial food-storage The Safer Brand insect killingGrodan 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