[mps9506]

I'm might get flamed for this, but I really think that most people that attempt this type of system end up finding out that their system was just storing up nutrients for a long time until they end up with an unending battle with algae.
Not to deter you from attempting this, but keep in mind that most of the nutrients taken up by fish are not stored there.
I've kept mushrooms in rubbermaid containers with nothing but powerheads, liverock, SW and flourescent lights.
Adding fish means adding food and adding nutrients. Fish are very ineffcient at uptaking nutrients, most of it goes right through them.
If I were to do what you are doing then I would recomend doing it with an invert system only.
JMO.