Cube4 Professional Rhiza

Cube4 Professional Rhiza is a high-performance, peat-free substrate formulated for max root development and microbial activity from the start. Designed for propagation and growth during early veg, this mix blends an excellent air-to-water ratio with a highly stable structure that supports healthy roots and vigorous development. One of the biggest benefits of this substrate is the addition of beneficial rhizobacteria, which help enhance nutrient uptake, boost plant health, and accelerate overall growth. Fully buffered for consistent pH and EC levels, it’s an ideal option for organic cannabis grows that demand optimal biological balance from the very beginning — resulting in healthier plants and enhanced yields. If you have demanding feeding schedules or are making the transition to flower, Cube6 Professional Rhiza is worth a look. For larger containers and full-cycle performance with beneficial rhizobacteria, Pot9 Professional Rhiza is a great fit.