Placement of algae scrubber

Hello,

I am looking for suggestions on how or actually where to put an algae scrubber on my 30 gallon, bow style, tank. Since I do not have a sump I understand I have to put it on top of the tank but with the Nova Extreme light which I have on top of the tank I really do not have room to put it on top of the tank unless it is hung on the side but what size screen and scrubber would I need to build? I really need to get this done as my tank is killing all the coral I have and I am not going to put any more coral in the tank unless the algae is under control.

I am open to any suggestions on what I can use to build this scrubber and any designs which would work on my tank. Could I possibly purchase an overflow filter, which is hung on the back of side of the tank, shine a light on it, and use that as my scrubber?

Thanks,

Glenn