Marco, The MP10 is placed there till my rics recover. I have moved the MP10 nearer to the top of the surface though. when my MP10 was placed on the back wall, I suspect the current is too strong in my tank for the rics liking now. Did not want to move the rics, so I moved the MP10 to the side. I have also placed a small piece of rock to block the incoming current bouncing off the wall. Hopefully they are happier now. The challenge with nano is that in such a small tank, it is hard to get the right flow for all the various livestock in the tank.
I am also toying with the idea of selling that away and get 2x 6025 instead. Really under utilizing my MP10.