Grodan IMPROVED Gro-Blocks 4"X4"X4" (GR10) acinfinity Too much or not enough

Too much or not enough of a particular element in a plant’s diet can lead to deficiencies and toxicities

you need to measure the pH of the solution

Great mixed with other seeds

Calibration: pH: 2 point auto 4

and are small enough to store practically anywhere

Grodan IMPROVED Gro-Blocks 4"X4"X4" (GR10) acinfinity Too much or not enoughGrodan 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