The Grodan Hugo Block is Grodan's answer to pot culture. If you want a rock wool block to grow the best and biggest plants the Hugo is the answer.
Grodan Hugo Blocks are 6 x 6 x 6 inches with a hole which has a 1.5-inch inch diameter to transplant your smaller cubes into when it's time to move to a larger environment. These cubes work great with absolutely any system or method but they work especially well with dripper systems due to their amazing water distribution properties. When used with a dripper system you can be sure you'll see an even distribution of water and nutrients throughout your entire block encouraging root development!
Each Hugo Block has a grooved bottom for drainage and they are wrapped on four sides to aid in moisture retention and inhibit the growth of algae. Grodan Hugo Blocks are fantastic for every application, from Wilma and NFT systems to drippers and passive growing, if you want a rockwool substrate but also want your plants to produce huge yields then the Grodan Hugo Block is the product for you!