Clay pebbles are inert, baked pellets that are usually between 4mm and 16mm in diameter. The inner core is porous and will absorb and release nutrient and water to the plants as required. Clay pebbles will not compact, which means that there is excellent aeration around the root zone. Clay pebbles can be reused, but it is important that they are thoroughly re-washed first.
Clay pebbles are a pure hydro media that can be used in pot culture, but can also be used to mix with other growing media, at the bottom of pots, to aid with drainage and aeration or as top dressing.
Tip: Always rinse your clay pebbles with fresh water before use. This will help to eliminate dust and small particles that can block drippers and pumps. It will also assist in ensuring that the clay is pH neutral before your plants are placed in the system.