Slab Professional Rhiza

Slab Professional Rhiza is a high-performance, bioactive slab substrate designed for intensive, high-yield grows. Made from premium, peat-free coco fiber, it offers enhanced aeration and moisture distribution — with an infusion of beneficial rhizobacteria that actively promote root health, nutrient uptake, and plant resilience throughout both veg and flower. With a uniform structure that promotes even root colonization, the addition of beneficial bacteria helps maintain a balanced, living root zone — making it especially beneficial for heavy-feeding cultivars or longer runs. Free from synthetic additives and unbuffered, it gives growers complete control creating feeding strategies that support their needs, with a boost of natural vitality. If you’re looking for a clean, bio-neutral option without the addition of beneficial bacteria, Slab Professional Basic is an ideal option. For a loose structured medium with the same biological benefits, check out XL Rhiza.