@Shaz51 i know, but if you knew how much effort i and money i have put in to keep our pond clean with conventional filters. Near impossible unless i go into the thousands of dollars. And a big job cleaning the rotten things, plus the waterfall always slows right down after 1 or 2 days cleaning.
So i made this a filter myself. And it has our pond water cleaner than ever. The quality you see on the image an improvement on yesterday's, but compared to the conventional filters, twice the price, and 20 x the work, it is beautiful and clean compared to always green or greenish.
We got near 100 fish in just 2000 litres of water. Most conventional filters only cater for 10-15 fish at most. So i'm very pleased with the result. What is more i could run the filter even faster if need be, all i have to do is put a bigger pump on it. However 7000 litres a day should be fine in the warmer months.