Grodan Delta 10 - 4 in Block 4 in x 4 in x 4 in w/ Hole Quantity:6 count Calcium (Ca) and Magnesium (Mg)

Calcium (Ca) and Magnesium (Mg) alleviate the potential elemental problems commonly seen in this unique growing media because they powerfully deliver these critically essential secondary and micronutrients to your valuable plants at the most crucial time so you get the optimized yields you desire

USE CAL-MAG SUPPLEMENT TO:

Dependability is critical in a lighting timer and failure is not an option

When the pH of the nutrient solution or the growing medium gets too high

cleanest and most pH stable nutrients on the market

Grodan Delta 10 - 4 in Block 4 in x 4 in x 4 in w/ Hole Quantity:6 count Calcium (Ca) and Magnesium (Mg)Gro 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.