This video shows how easy it is to build a pond filter. This filter design is inspired by Shawneen's DIY pond filter. The pond it sevices is about 800 gallons, With 2 koi and 4 goldfish.
by Jaclyn Rose
by Art of clothes.
by CooLoserTech
by Pink Poodle Crafts
by DIY
by livingroom79
by Better Homes and Gardens