This is made here in the UK, I have no first hand experience of the filter, but I spent quite a lot of time researching it last year and even called the manf. The general consensus seemed to be was that it’s about as good as it gets for a microbead type filter and if you don’t have the space for a normal filter it’s ok, however it was recommended to be used with a Cetus sieve.
Main pond 4000 US Gallon, 22 Koi. Oase Proficlear Premium + Bio Module, Bitron 120 w UVC, Bakki Shower, Dura 7+ ashp. Grow on tank 600 Gallons with Eazypod Automatic and 70 litre K1 biochamber.