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

Silent alarm for both high and low settings

They work well for mixing solutions or for building your own mega hydroponic system

This pigtail power cord can be hardwired and can be disconnected by a fixture side IP68 Wieland RST plug

The inclusion of hemp seed flour in the King Kola® formulation is a first in the hydroponics industry

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.