since you are asking if an ecosystem is worth it, no. You can save the money and have a similar set up in a fuge with live sand and macro algae. Also, if you plan on using a skimmer, since the top is sealed they don't and won't fit into the first chamber. They make a "pro" system that can house a skimmer but it is usually included at a "pro" price. Just make sure you buy a large enough sump for what you want to do.