Grodan PRO Delta 4 - 3 in Small Unwrapped Down to Earth Build up your plant cell

Build up your plant cell walls and encourage productivity with Sturdy Stalk

art studios and more

Heater tube is fully submersible

It increases the essential oil content in herbs and speeds up the development of flower bud set and the total flowering phase

Less filter changes and maintenance - every 7

Grodan PRO Delta 4 - 3 in Small Unwrapped Down to Earth Build up your plant cellGro 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.