I had a 23watt CFL over my 5gal and it was high light for me. I actually to to raise it up a little b/c it turned into an algae farm. You can find some nice looking desk lamp so you can still keep a nice sleek look to it.
I think an Eheim Ecco 2232 would be way too much flow for a 5gal. I have one running on my 29gal and it's pretty decent flow in there. The 2211 might work for you if there's a way to adjust the flow.
Last edited by DishyFishy; 07-16-2012 at 01:37 AM.