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0% Water Soluble Nitrogen
This kit effectively eliminates harmful microorganisms
When using only mineral (chemical) fertilizers
They discovered a never-before-used combination of vitamins
contains no harsh abrasives
Grodan Delta 6.5 Block, 4" x 4" x 2.5" with holes Nuke em 0% Water Soluble NitrogenGrodan 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
US$ 211.50
US$ 1150.00