These are the perfect substrate for growing in all sizes of containers or pots. B'Cuzz Kubz are ideally suited to both top and sub irrigation. B'Cuzz Kubz offer growers excellent water retention properties and unique capillary action. Each cube is a uniform 1cm cube. B'Cuzz Kubz offer long lasting structural strength ensuring that B'Cuzz Kubz do not lose any of their qualities during the whole growing period.