Grodan® Stonewool Delta Gro-Blocks & Big Mama Size:Grodan Delta 5.6 - 3 in Block 3 in x 3 in x 4 in w/ Hole (32/Cs) Simply plug it in and

Simply plug it in and it is ready to go

10 Amps/ 120 V/ 60 Hz

All sizes have a "U" shaped rear door for total access to your growing space

This revolutionary filter will keep your air-cooled reflectors

creating less heat

Grodan® Stonewool Delta Gro-Blocks & Big Mama Size:Grodan Delta 5.6 - 3 in Block 3 in x 3 in x 4 in w/ Hole (32/Cs) Simply plug it in 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.