I got a crazy idea last night. With magnetic pumps like Koralia---it would be possible to attach small powerheads off the top glass, or even the support bracket.
The cords could be attached to the inside or outside of the support bracket. On the outside they would be exposed to the lighting. Could those cords withstand the heat?
It seems like it could be a viable way to get maximum flow to trouble spots.
Also--the smaller heads would mostly hidden by the tank molding.
OK--rip this one apart. I`m obviously not a tech-guy
thanks for all info...........