The Right Substrate Changes Everything.
Your growing medium is the foundation of every grow. It controls how your roots breathe, how water and nutrients move through the root zone, and how stable your plants stay from seedling to harvest. Get it right and everything else becomes easier.
At Growers Depot, we stock premium substrates for every growing style — coco, soil, expanded clay and more. Whether you're running a full hydroponic system, a coco drip setup, or a classic soil grow, we carry the mediums that serious growers trust.
What's in This Collection
-
CANNA Coco Professional Plus (50L) — One of the world's most trusted coco substrates. 100% natural, RHP certified, fully buffered and weed-free. Made from specially selected Indian coconuts that never touch the ground during production. Holds moisture while keeping oxygen flowing around your roots. Reusable across multiple grows.
-
CANNA Terra Professional Potting Mix (50L) — A premium soil-based growing medium blended with upgraded black peat, granulated peat moss and perlite. Light, airy and homogenous — the same quality all the way through the bag. Disease-free, fast-draining and built for strong root development and bigger yields indoors and outdoors.
-
CANNA Aqua Expanded Clay Pebbles (45L) — pH-neutral, inert, kiln-fired clay pebbles sized 8–16mm. The go-to growing medium for recirculating hydroponic systems, DWC, flood and drain, and net pots. Low soluble salt content, high air retention, and fully reusable. Works as a standalone medium or as a drainage base layer in soil and coco pots.
Which Substrate Is Right for You?
-
Soil grow (indoor or outdoor): CANNA Terra Professional — plug in and grow, minimal system required
-
Coco drip or hand-watering: CANNA Coco Professional Plus — pair with CANNA Coco A+B for best results
-
Recirculating hydro, DWC or flood & drain: CANNA Aqua Clay Pebbles — inert, reusable, zero interference with your nutrient solution
-
Drainage layer in any pot: A 4cm base of clay pebbles under coco or soil improves drainage and root zone airflow in any setup
Why CANNA?
All three substrates in this collection are made by CANNA — one of the most respected names in professional growing. Every product is quality-controlled from raw material to bag, RHP certified where applicable, and designed to work seamlessly with CANNA's nutrient ranges. Consistent batch after batch, grow after grow.
More substrates — including additional brands, sizes and growing media — coming soon.
Free shipping available on qualifying orders across Australia. Bulky items may incur additional freight charges.
