Grodan Stonewool Delta Gro-Blocks & Big Mama dupe Hydrofarm's T5 replacement tubes offer

Hydrofarm's T5 replacement tubes offer HO light output at a great price

The exceptional physical properties of this perlite make it tops in the perlite world for adding porosity to soil and soilless mixes

• Vermiculite - horticultural grade

It works well with either hydro

They look like small ladybugs with black bodies and orange heads and tails

Grodan Stonewool Delta Gro-Blocks & Big Mama dupe Hydrofarm's T5 replacement tubes offerGro 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.