50ltrs of Hydroleca. These light weight, honeycomb centred clay balls can be used to provide a drainage layer in terrariums, a substrate for the hydroponic growing of terrarium plants, and as a filtration media in bio-filters. *****Due to the size & weight of this item flat rate courier shipping must be chosen on checkout, if Royal Mail is chosen the flat rate courier shipping charge will be invoiced seperately before your order is dispatch*****