Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 Promote Features: Low frequency

Features: Low frequency

Grodan Grow-Cubes - The product consists of small stonewool croutons about the size of a fingernail

An innovative

PhysioSpec Greenhouse: 2

By far the most popular slab for the hydroponic hobbyist market

Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 Promote Features: Low frequencyGrodan 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