Mine is loaded with calerpa (sp?) and
pods. Not sure what 5g of fuge would do for a 100g, but I still enjoy mine. Pick the macro algae out to feed my tang. Loaded with
pods that breed and I'm sure supply the tank with them for my mandarin.
I am too limited with space. The other thing is that since it sits on top of the tank, I can't run the lights opposite from the main, which is preferred.
I just enjoy the additional life I get to maintain in it.