It will take up the tank space. I have went down to ##### yesterday to look at their live tank maintained by the quickstart system, which is less than 200. This quickstart system has a skimmer, filtration and a pump compartment. It is like a "all-in-one" system, which I think might be cheaper and more convenient compared to getting separate equipment (to a newbie point of view).
By the way, what do you mean by " a prizm may support yr tank"