September 26, 2014 On hand now: concrete (still need sand and some fine gravel), cardboard boxes for the first form (400x400x500mm), packing tape to cover the cardboard, and so almost ready to attempt the first version. There's even several 3D renders showing how they should come out looking like (approximately).
The walls are a bit too thick in these renderings, and the dimensions are not correct according to the first version finally decided upon -- but if I had to pick one that would look most like the box being attempted, it would be the more cube-like version.
After the box is formed, it will be tested for holding water, let to sit for approximately one month before introducing biology (fish, plants), and only after a pH test.
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