Q. Why did you make this mod?
A. I wanted a standalone mod for larger storage tanks with larger connection surfaces. I didn't find exactly what I wanted, with the closest being SuperTanks by Styxy/Sil3ntSt0rm, however, SuperTanks seems unfinished.

Q. Why are they built underground? Why not make towers?
A. It's way easier to stick some sprites on a concrete slab texture than model and render a new building.

Q. You did a silly programming thing. Why did you do that?
A. This is my first time modding Factorio or touching Lua.

Q. You could fudge the depth so that the tanks operate like normal ones and don't require pumps, why don't you?
A. My intention was to add a convenience item to the game, but not too much of a cheaty item, so I feel there needs to be some trade-offs.