EXXellent

EXXellent is a heavyweight rockwool slab that lives up to its name. Built for growers running longer cycles, larger plants, or more generative-focused strains, it contains a higher water-holding capacity and thicker profile — meaning it offers extended moisture retention and root zone stability. This makes it ideal for growers who want to stretch dry-backs without compromising plant health. With a dense structure that supports vigorous root systems and provides a sturdy base for big, heavy-yielding cannabis plants, EXXellent delivers consistency across the slab, minimizing dry spots and promoting uniform nutrient uptake. It’s a go-to for experienced growers who like a bit more control during flower. Growers who need a slab that reacts quicker to irrigation change, will find Reaxxion offers faster dry-backs and more responsive steering. If you want a balanced slab with good generative potential and root-zone airiness, OptimaXX is a solid choice.