I went under the aquarium only since early 2012 and have in terms of filter technology previously had no idea. Since my old Aqua mini backpack filter had to be constantly cleaned because he dripped otherwise I bought after much deliberation and research this filter and must say that I am perfectly happy with it. The flow is quite enough for my 60 liter tank. Only if I want bubbles it is very noisy. Otherwise, you do not listen to him and the ease of cleaning is done within five minutes. A small plate underneath kept filter elements draufgepackt and to clean off. No cable wrangling or wet floor. The installation is very simple and also the exchange of the filter elements is very easy. Unpack filters, filter elements and also looked unpacked. Bracket attached to the pool and let the filter into place. Angeklemnt of electricity. Done. The choice which flow you want is easy to use. The selection of all three variants is not possible. I personally find even good because otherwise the filter performance would be severely limited. Commercially I would have to spend twice for the filter.
All in all a super-effective filters of a the aquarium be even more sweetened.