Thanks for the input. Of course, no offense taken dude. Actually, just to clear things up, the main reason I'm doing this is not just to make it work but to understand a possible simpliest minimal balanced marine tank system. It's not suppose to be a display tank, rather a tech tank. I guess for me, I prefer to fail but to understand rather than being successful with a stroke of luck (I don't believe in luck anyway) but not understanding how did it come about, this is my joy. After finding and understanding that simpliest minimal balanced system, then I'll make my display tank (ofcourse after having the funds for it too).
I'll give you an example... let's say an increasing nitrate problem. For me there are two ways of solving this problem. One is to introduce a component that will neutralize that problem. I prefer to start with a biological component first, say a cyano-algae or a mangrove. If it the problem is still persists then thats the only time I'll introduce a mechanical/chemical means. But only in that order, because anything that is nature driven has its way of self-sustaining, self-adjusting and self-maintaining as long as all its life support stuff are there. Nature has its way of solving problems. The second way of solving this, aside from neutralizing, is preventing or elimating/isolating the source of the problem. Maybe I have too many fishes or have the wrong species mix. Maybe its my lighting that over expose or over oxyginate the water that forces the nitrate bacteria to retreat deeper in the live sand. The idea is the start with the simpliest system. For all we know, I'll end up water changing and having a sump tank and will the apparatus-maximus just to make it work, at least at that time, I know.
Anyway, this is just an idea how I'm going to handle this 'experimento'.
I think it's kinda subjective if we are truely giving our 'pets' the optimal care. I think we barely scratched the surface on understanding these wonderful creatures on how they survive and/or thrive.