EagleEyes said:
... my goal is to keep no kind of filter in it. Only a light, a power head, and my livestock. I think the key is to have all the nutrients cancel each other out, so that everything gets used up somehow. such as one unit of macro to cancel out the effluent from one other unit (such as a fish.)
I would say that it's possible to create such a system. However, it's a very difficult balance to maintain.
Before trying something like this, ask yourself these questions...
What am I trying to gain, or demonstrate with this kind of a system?
Am I willing to risk several disaters or total loss of livstock as I learn how this kind of a system works?
Am I enough of an expert and do I have enough experience with SW and reef aquqrium systems to set this kind of a system up, and, more important, to maintain it?
IMHO, there are very few people out there that should be attempting "no filter" kind of aquarium. Be sure you have the right reasons and the "right stuff" for this sort of project.