Complete aquarium newbie here, no doubt about to reveal my utter cluelessness!
I've just got a 50x30x30cm aquarium (not sure what the capacity is...45 litres perhaps?). I bought a Sicce SharkAdv filter which I suspect is rather overenthusiastic for the tank. However, that's not my question. The instructions that come with the filter are really sketchy, and it doesn't say anywhere whether the filter should be fully submerged (including power cord). There is also no clear illustration of the filter at work, so I can't take any cues from that.
Does anyone know whether this kind of filter should be completely under the water?
Thanks in advance!