Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 Promote Requires fewer reflectors to meet

Requires fewer reflectors to meet desired light levels

Can be used multiple seasons

By far the most popular slab for the hydroponic hobbyist market

Features: Low frequency

Item # Description Initial Lumens CCT Product Dimension Net Lbs Box Dimension Gross lbs CS/QTY UG-T5/48/65/240 UltraGrow – 4X8 T5 Fluorescent Fixtures w/6

Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50 Promote Requires fewer reflectors to meetGrodan 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