We have a Juwel Lido 200.
The black filter box was on the right side of the aquarium; but we wanted to move it, so we removed the silicone and re-siliconed it on the left-side of the aquarium instead.
However, when we moved it we weren't careful enough about the height at which we put it; and it's a little higher than before - perhaps 1cm or so.
The heater is still submerged (and over the minimum water line on the heater); but the pump is only partially submerged now. The impeller and output are submerged; but not all of the rest of the pump.
If you look at the pictures on the Juwel website (https://www.juwel-aquarium.co.uk/Products/Filtering/Pumps/Eccoflow-pumps/), the water level covers three of the five gratings on the black box-part of the pump.
I know ideally these should be fully submerged; but all I can find on this online in general is that it "may reduce the life of the pump" because the water also helps cool the pump.
Are we likely to have a problem here - should we remove the silicone, drain our tank again and move the box down? Or will it be OK, just louder/hotter/less efficient?