Despite real satisfaction a major shortcoming

I too have bought the above External Filter and use this now almost 1 year.
Neither the electricity bill has increased since commissioning of the aquarium, even I can not complain about the smoothness of the filter or its handling in general.

If not for the word "if" would not.

Over the past week, I was wondering about a low water level in the aquarium, and examined everything I ever had bad luck with a pool, which had a hairline crack in the glass.

Nothing could be found to the outer filter on the series was and I realized that at the outlet of the power cord slowly seeping water. So very slowly over 10 liters had gone unnoticed in the aquarium cabinet, whose wood had obviously soaked with it.

Despite thorough investigation, I could not find anything, indicating a defect and after cleaning the filter, orderly assembly and recommissioning, no more water leakage was noticed. But, for safety's sake I put the filter into a bucket and watched the whole thing.

Now, 2 days later, I realized how good this precaution was back had leaked water, again at this point, and again, despite the test "head gasket" despite correct assembly and although no errors or defects were found. What surprised me was that the pump head somehow was full of water and I wondered how the water because there was reinlaufen. Only hours later, and after a thorough internet research I found a possible cause to which you have apparently come first, but hardly anyone had ever found ... at least when I look at my forums and feedback. There are the two small O-rings on the bottom side of the safety valve where the inlet and outlet hoses are mounted on it, which may no longer close properly and there runs leachate into the pump head and then when the full run, comfortably and without which one noticed the water continues to run drop by drop on the power cable outlet in the furniture down.

Let's see, I have written to the manufacturer, will also go on Monday to the dealer and buy new washers, but after this experience, I must say, I lack the clear indication of the manufacturer in the replacement of the seal rings, as a visual inspection, no defects showed. It says only that of "spray the gasket with Eheim seal spray ... a" these sealing rings are in my opinion completely ok, but it is no other cause detectable. If the exchange of the seal rings do not work, I can after I have read many Internet messages only advise on such unexplained water loss from the device. I lack the manufacturer's notice to put the filter in a pan to prevent any eventual flaws. Finally, a good aquarium cabinet is more expensive than the filter and I do not want to buy a new aquarium cabinet due to a faulty filter, but perhaps no longer can be avoided.

I am looking forward to the reaction of the manufacturer.

In principle, the filter delivers what it promises, even to this deficiency, which is still substantial. Because here is very hard to see for the user that water flows into the pump head, a water loss is usually noted only too late and that must not happen. It can not be, the user can be made only by a loss on something attention or attention and can then only take care of prevention.

In principle, this review should not discourage the device, but also help customers to avoid the same mistake I made. Are there namely these seals, the only're penny-products, it is easy to buy these on Vorat and even share in six months and to set the filter into a bucket to avoid that here but unnoticed water in the furniture seeps ... And for the manufacturers requires only an additional warning line in the instruction manual and the mention, these gaskets to buy on stock and might even be accompanied by a couple of replacement seals in the original box, as expensive can not be yes. And the customer would be alerted and would make it determines.