BioSmart 16000 UVC by Oase (UK) LtdPowerful flow through filter for garden and fish ponds. The combination of filter foam and integrated UVC clarifier ensures best filter performance: Various filter sponges ensure optimum mechanical and biological filtration. For cleaning, the flow through filter has levers for compressing dirt out the filter sponges as well as a bottom drain and a rinse connection. Key features: Reliable and flexible implementation entry level flow through filter Easy