The 8" Cultiwool Big Daddy is here in UK.  Each block measures L20cm x W20cm x H19.5cm Check out our which fit perfectly on top !! Be sure to also check out the ! 

Cultiwool's Big Daddy Blocks can support large plants throughout their lifecycle meaning greenhouse and indoor growers maximise yield per plant. The extra mass means extra physical stability for top-heavy plants and additional protection from algae and root pests thanks to its resistant cover.

Why use Cultiwool? These inert blocks are perfect for those looking to crop steer with different irrigation strategies; they can be resaturated quickly and effectively. The WC (water content) and EC (electrical conductivity) are distributed uniformly throughout the slabs, which means better control over your crop steer irrigation strategy.

Cultiwool - the ideal solution for growers looking for a reliable substrate to support easy irrigation and leaves out all the guesswork!

• Ample Accommodation for Roots for the possibility of growing humongous plants!
• Quick Draining for Accurate Plant Steering

Cultiwool stone wool is used worldwide by professional cultivators. It allows them to grow top-quality produce with fewer inputs. The basis of a successful crop for a longer period is a substrate with superb and consistent homogeneity.

For whatever unknown nonsense reason, Grodan can't/won't whatever, sell this size block to us UK growers so the guys at Cultiwool have been able to step into the picture to give us a better product... for less!

Available now to us also, are the 25cm (10 inches) square Cultiwool slabs!