SUN CPF-2500 Pond Bio Pressure Filter with 13W UVC Clarifier - Up to 1600 Gallons for Koi & Garden Ponds | Outdoor Water Feature Maintenance

I am a complete novice when it comes to ponds, pumps and filters and how to keep a pond clean. Last season I tried natural products (barley straw, plants to add oxygen, etc) and vacuuming out leaves the best I could. Then I found the wonderful sun grech bio filter on amazon WITH GREAT reviews and great questions and a reasonable price AND IT WORKS SO WELL! My pond was so dark I could only see the multi- colored 30 or so goldfish (from small size to pretty darn big) when they came to the top to feed. In TWO WEEKS, the pond is so much clearer, I can see deeply into the pond!! I cleaned the filter twice following directions and using the handle. Waste water was putrid green (showed how well it was working) but cleared quickly once I changed back to filter mode. I am ecstatic and the fish are happier too. I am sure I won't have to clean filter so often once pond is a little more stable (but so easy, I don't mind cleaning it!)