Have a pond about 7 - occupied with goldfish and koi 10 m³. Already have a filter of similar size from another manufacturer. I have read different reviews, I was convinced that the filter gets my algae problem under control. Far from it. I have now installed it in addition to the other filter. Have both UV lamps in the filters in use and additionally an algae destruction device that electronically operates copper-based. The Summer 2013 now favors the Algenwucks much so that I have to use all three systems to the water in the pond to be clarified somewhat. From the filter as such I'm not entirely convinced. Must him all three. - Clean four days together with the other. Only then the water remains fairly clear. When I now in March 2014 took the filter into operation, I discovered that the UV lamp is not lit up. After checking I came to the conclusion that the transformer of the lamp had already given up the ghost and after 3 months of use.
