Grodan Stonewool Delta Gro-Blocks & Big Mama dupe All units 175 watts and

All units 175 watts and above are multi-volt capable

Built-in socket with 15' ballast cord

It works well with either hydro

Put the dry powdered product mixed with water or compost tea into each hole

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

Grodan Stonewool Delta Gro-Blocks & Big Mama dupe All units 175 watts andGro 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.