Grodan Improved Big Mama Block (Case of 18) Book then buffers it with CalMag

then buffers it with CalMag and Gypsum for a perfect pH ratio

master valve

this premium bud hardener invites your garden to maintain peak performance all the way to the finish line

Collects debris along the depth of the discs

This fixture includes an integrated electronic ballast

Grodan Improved Big Mama Block (Case of 18) Book then buffers it with CalMagThe Grodan Improved Big Mama is the largest block available. With more than twice the volume of a Hugo block, it is capable of supporting large plants through the end of the life cycle. The Improved technology allows for better re saturation and balanced water distribution over the height of the block, allowing the roots to fill the entire volume of the media. Case of 18