the tube...

it's flexible!

basic construction

We are going to have to transfer water from one column to another at some point, and maybe this can be a way to do that. The tube is made from the tops of coke bottles with fishing wire looped through to keep them together. As long as the bottom piece is anchored, all of the pieces will sit securely in the one below it. The tube is easy to construct, uses a part of the bottle that wasn't doing much in the stacking schemes, and most importantly, it's flexible. This means that we can potentially transfer water to columns that are not immediately adjacent to each other . . . I'm not quite sure what the advantage of that may be, but my intuition tells me there is an advantage in there somewhere.