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GrowDog 60/40 Coco Pebble Mix 40L

GrowDog 60/40 Coco Pebble Mix 40L

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  • Premium grade, washed and prepared Coco and Irregular Hydroleca
  • Ultimate in Compaction resistance.
  • Perfect mix of water retention, drainage and aeration.
  • Unique Blend encourages fast, proliferate growth.
  • Consistent and extremely effective results.

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A Perfect Balance of drainage, aeration and structure – suited for any system using pots!

GrowDog's 60/40 coco pebble mix is a pre-mixed growing media. The blend provides washed and prepared coco coir with ultra-low EC hydroleca clay pebbles. The premium-grade, irregular-sized "leca" pebbles add structure and provide aeration and drainage, while the coco substrate holds vital nutrients to sustain your plant’s growth between feeds. The same processes encourage beneficial microorganisms. You won’t find a better 60/40 mix at this price!

Pair with air pruner pots to provide roots an unrestricted environment for unparalleled growth. More roots = More fruits!

GrowDog 60/40 is an inert substrate, it doesn't contain any plant nutrition on its own and requires plant food dissolved into a nutrient solution. This versatile media suits several different systems.

60/40 Coco Clay Pebbles in Sub-Optimal Conditions

This coco mix will insulate plant roots and can help to protect against cooler, winter temperatures. Coco retains less water than soil, so it could allow you to grow in sub-optimal environments. For the best results, we recommend maintaining a consistent growing environment for your plants. Generally speaking, maintain daylight growing temperatures around 25C (77F) and nighttime temperatures no lower than 18C (64F).


Coco consists of fine particles that create micropores that hold on to water. Hydroleca clay balls introduce macropores in the substrate for improved aeration. This compaction-resistant blend provides optimal water retention, drainage and aeration properties.


Strong aeration qualities is an essential property for any growing media. Ensuring air flow to the root zone is essential for plant health. Roots require access to oxygen for strong, healthy growth. This is considered one of the basic requirements to support a successful crop.


On its own, coco coir retains a lot of water and is easy to over-water. Including clay balls in the blend aids drainage and helps prevent over-watering. The coco holds enough nutrient solution between feeds to sustain healthy, luscious growth.

Suitable 60/40 Coco Clay Ball Watering Systems

Garden tip:

  • If you're using a re-circulating system, we always recommend using a suitable filter. The smaller pieces of coco can soon clog feed and/or return lines.

Flood and Drain: 60/40 Coco coir and clay ball blends work best in an ebb and flow system. The clay balls provide good aeration and drainage while the coco coir holds onto the nutrient mix allowing less frequent floods.

Dripper system: Coco & clay ball mix is best fed little and often in a dripper system.

Hand watering: At the most basic level, you can hand water your plants. The drainage capabilities of coco prevents over-watering. Always avoid nutrient reabsorption from pots/containers sitting in any runoff.

How to Use

The bags can become compacted during transportation. Before decanting the substrate into your growing vessel, we suggest you fluff up the medium and break up any larger bits. You can do this while the bag is closed by tapping the sides, like how you would fluff up a pillow. More information is available on our blog.

Garden tip:

  • Use a nutrient formulated for Coco substrates. Coco can sometimes absorb CalMag while releasing sodium & potassium. Coco specific nutrients account for this exchange.
  • We generally recommended you let your pots dry out before you feed again to maintain oscillating wet and dry cycles.
  • If you’ve used clay balls before - the addition of coco in this mix means it requires less frequent watering. The coco retains the nutrient solution.
  • If you’ve used pure coco before - the addition of the clay balls for aeration and drainage means it requires watering more frequently, with a reduced chance of over-watering.


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