Unfortunately, not really reliable.

I had to share the experiences of some other buyer.
In the beginning was the pumping performance OK, where it has little to do with the specified values.
I pump by about 7m hose in my pre-filter at a head of about 1.6m.
According to statement would concern as far above 2000l / h, are realistic about 1500l / h.
Over the summer, this performance was unfortunately continuously for so
even 900l / concern for the end of the season, at best, h.
The prerequisite for this is that the pump is completely cleaned weekly,
ie complete pump out, filter housing, open the pump,
the rotor out and clean it thoroughly and the stator.
As I said a week !! Otherwise the Pumleistung decreases rapidly to below 600 l / h!
I have complained about this loss of performance and got the first answer, which is the result of deficient Reinigng and I möge.Erst sending the pump for inspection When I pointed out that this LT yes. Reviews is not an isolated case, how long would last because such a test how I should operate in time my filter and yes I have a warranty, you sent me as a goodwill gesture to a new pump.
With the indication that this would be unique since such power losses came by poor maintenance condition. The next time I had to defect you send and regular (meaning if a week ??) cleaning is a prerequisite for a stable pumping performance. One pump must be cleaned regularly is clear to me, but I do not see a pond pump daily to pick up from the pond to control them and cleaned if necessary.
By the way we had before a pump While the 80W consumed for similar performance, but instead of half a year,
almost 15 years did its work. (it was 2-3 times waited a year).

For the durability of the pump there is of me why a star.
For the service with grace rather than a guarantee also.