Expanded Clay or LECA (lightweight expanded clay aggregate) is an excellent growing medium which can be used in aquaponic farming, hydroponic growing systems, and conventional soil-based agriculture too.
Best used in our Hydropot series, but also a suitable medium for use in flood and drain or nutrient film technique hydroponic systems.
Note: Requires an initial wash to rinse clean. Soak for a few hours and stir around before draining.
For more information on growth mediums, check out our blog post on hydroponic growth mediums.