That is not a Sterilite container- it's Rubbermaid. Both are. Got it from Home Depot, not Walmart
You are right about it being a lot of weight to support- when filling it up you have to start with the bottom or else the top can fall down into the bottom (this already happened, could have been WAY worse than it was)
It's not finished yet, these pictures are from it's first test run. It will not only have air lines in the root zone, it will have a fan placed over it's nutrient/ph adjustment window and holes poked in the opposite side.
Did you seriously think I designed something like this and didn't know about providing fresh air for the waterfall to work? LOL come on... It would be like someone trying to tell me I needed a slide if I posted a ROOR that didn't happen to have one in the picture.