We have an approximately 800g Koi Pond with 1.5" PVC piping running along the bottom connected to a 2200 GPH Submersible Pump to feed our new 2630 GPH Filter from the bottom of the pond. We had an algae bloom this summer with extremely warm temps and our other cannister filter just couldn't keep up. We installed this filter and within 2-3 days with 24/7 UV light (when my photos was taken) you could already start to see the bottom of our 36" deep pond. We had about 10" of visibility with our old filter. In service for roughly a month now and our pond is crystal clear using the UV light on the 12 ON / 12 OFF setting. I could see every rock, Hot Wheel and Golf ball that my nieces & nephews had thrown into the pond over the summer!! We house several 18-24" Koi and lots of 6-8" Koi & Goldfish and this filter keeps up very well. We have cleaned the filter one time and the crank style cleaner with the backflush is a game changer!! You can really see the water turn as the media is being scraped of all sediment and fish gunk and not having to pull apart the filter for cleaning ultimately just leads to more frequent filter media cleaning which is a real bonus. Great filter!