Grodan Gro-Block Improved Select Rockwool Type:GR4 Small w/ Hole, 3" x 3" x 2.5" - Case of 384 The active interface repeats the

The active interface repeats the input signal to the output

and OptiClimate

2 Unit Model

and amino acids

Mother Earth Coco + Perlite Mix is an RHP Certified* natural plant growth media that is a great alternative to potting soil and other traditional growing medias

Grodan Gro-Block Improved Select Rockwool Type:GR4 Small w/ Hole, 3" x 3" x 2.5" - Case of 384 The active interface repeats theNew and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water