The Giant Biofill XL is a large multichamber filter: ideal for koi ponds. The water flows up and down through the removable cassettes with filter materials.
• Including 18 Watt UV-C Unit which destroys floating algae and germs.
• Including Japanese matting, bio filter balls and all connection pieces.
• Internal aeration is optional to add oxygen.
• Internal Pond Heater is optional in winter.
All Velda filters are also available as complete set with Green Line pond pump, UV-C Unit, hose and all adapters.