Any suggestion for an external pump ? Which brand/type is supposed to be the most silent ? I prefer a 230V pump. I might use the trick with "foam in a box". But it would be nice if the pump was quiet by itself.
Eheim 1046 runs on 230V. Flow is the same as the pump in a reserator 2 (and IIRC same as reserator 1), but head is higher.
I don't think you will end up putting it in a box, it's very quiet.
..... seal it completely .....
but if the pump heats alot that might not be wisest thing....
I would assume that by definition, the pump is watercooled ! Can't go wrong there.
Part of the heat of the pump will be transported by water, but pumps don't function like a waterblock, most parts are plastic. Some part of the heat will have to be transported by air, a closed box means there *might* be a problem.