Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial lighting-accessories It is equally suited for

It is equally suited for hydroponics

bulbs (all)

SNS-604A and SNS 604B are each one-part nutrient additives to be used throughout the plants growing and flowering cycle

it keeps dust from migrating throughout the house

Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial lighting-accessories It is equally suited forGrodan 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