Grodan Delta 10 - 4 in Block 4 in x 4 in x 4 in w/ Hole Water Pumps Aeration & Irrigation which is repeatedly washed for

which is repeatedly washed for low EC and composted

The formulation of surfactants and organic acid detergents will help lift away organic mineral deposits without any odor

removing the need for a frame inside

Comes with 2 fittings to allow chiller to be plumbed with 1 in hard PVC pipe or 1 in flexible tubing

Achieve thicker and more rigid plant cell walls for sturdier plants

Grodan Delta 10 - 4 in Block 4 in x 4 in x 4 in w/ Hole Water Pumps Aeration & Irrigation which is repeatedly washed forGro Blocks are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro Block. Small plants can be fully grown in our larger Gro Blocks. Holes are perfect size for any 1. 5 in starter plug. Come in packs labeled with instructions. Big Mama is Grodan's largest block ever produced! Big enough to grow a large plant for its entire life. More than twice the amount of wool as our Hugo Block.