Calwest Tropical

Horticultural expanded clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure and ability to cover a large surface area, they offer the ideal environment to foster beneficial bacterial growth around the root zone, leading to naturally healthier plants.

I absolutely LOVE these expanded clay pebbles for orchids. Here in Sacramento where it is very hot and dry we need to be able to water our plants very often to keep humidity up without them rotting. Adding lots of Grow!t pebbles to your orchid mix will do just that. Because they are rounded they can never stack together without lots of airspaced in between. Also highly recomended in very wet areas like Florida, Hawaii, and parts of Texas where there is so much humidity and rain that over wet roots are a constant problem unless your mix can drain and dry quickly.

Expanded Clay Pebbles benefits:

  • Extremely stable in both pH and EC
  • Made from 100% natural clay
  • Strong structural integrity means that they are less likely to break and compact, which helps to prevent dripper systems from getting blocked
  • Pre-washed to aid in stability
  • Drains freely and does not hold any excess water, providing good oxygen levels around the root; suitable for flood and drain systems, multi-pot and drip feed systems
  • Pebble size 4mm - 16mm

Expanded Clay Pebbles can be used for:

  • Aeration of growing media - ideal to mix into coco coir or soil to aid aeration
  • Drainage - will hold water as well as offering great aeration properties and free draining
  • Decoration - looks great as a top dressing for pots and also helps to prevent evaporation
  • Hydroponics/hydroculture - used widely in hydroponic and semi-hydroponic growing, they are ideal for flood and drain, deep water culture and drip feed systems
  • Aquaponics - are also ideal to be used in aquaponic systems

When used in aeration of potting media, mix horticultural clay pebbles into your bark or moss to loosen up the structure, leading to better root development. The more expanded clay pebbles you add the better the drainage and aeration.

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