"Matt, it's quite apparent you didn't follow up on the GrabCad competition.  Let me address your questions and concerns from a more realistic/logical point of view.1. You water plants from any direction you want, this isn't an irrigation solution.2. True, but do some research on terrariums and how they are usually open.  Not all require a closed environment.  Plus how do seeds grow in the wild, on their own?3. The design represents a concept where this isn't meant for large plants.  Also, again you miss the point of this project.  If it were realized to thepoint of actually be injection/blow molded, the scale and specs would change.4. You just mentioned that in your previous comment thus making this one irrelevant.5. Again same here, you fail to understand the concept and refuse to use reasonable logic.6. I would say pretty easy unless you have no access to flowing water.  In which case, don't buy it, or anything else similar."