Grodan PRO Delta 4 - 3 in Small Unwrapped Lighting Components It’s unique formula

It’s unique formula

Outperforms standard HPS bulbs

Power Si is proven to show benefits towards your crop's yield

This submersible pump is perfect for aquarium

Optimal full spectrum provides plants Veg and Flower all stages with everything they desire in the natural sunlight

Grodan PRO Delta 4 - 3 in Small Unwrapped Lighting Components It’s unique formulaGro 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.