chemical plant planter (selfwatering)

I mixed several things together to create this "selfwatering chemical plant planter".

I think this is a bit a special planter and not for everybody - maybe for sci-fi fans or similar. There is an hidden pipe from the barrels to the tank for watering. Maximum water in the barrels = maximum in the tank/planter = perfect watering. Because of this the thing can not scale to any size or you really have to keep care about the thickness of the walls and the hidden pipe. I guess some upscaling should