I was just wondering how everyone hides there powerheads? I have mine in the rock currently, but doesn't this create a problem for cleaning the powerhead if corals are on top of the rock needing removed?
As far as I know the only way to hide them is not have them. Because like you stated if you try to hide them with rock you will have to unstack the rock to get to them for cleaning, and in the long run this will become more of a problem than having to look @ them.
Get rid of them and add a closed loop. I have a powerhead in the corner of my tank that has become totally encrusted in coralline, I don't really even notice it anymore.
Hide? no no no, you don't need to hide tthem. Wait till your coralline (or green algae, whichever grows faster) grow over it, and you won't even notice it's there........
But seriously, don't try to hide them. Hiding them makes servicing them a messy job.