If you think you’ve seen a big tank before, just wait until you get a load of the behemoth Nature Aquarium going up in the Lisbon Aquarium this year. Aqua Design Amano has been commissioned to build the largest Nature Aquarium ever conceived and at 40 meters, or 131 feet, building this extremely long freshwater planted aquarium will take more than just a whole lot of glass.

If you’ve ever seen how much space a single box of freshwater tank can take up in a “normal” sized, one meter, three foot long tank, then you can imagine the amount of biomass required to plant an aquarium 40 times as large. The need for specific freshwater plants is so great that apparently ADA made a call to all of its suppliers and even Japanese hobbyists to contribute enough plants to create this insanely large aquascape.

At more than 130 feet long, the Lisbon Aquarium’s Nature Aquarium display will make it the largest in the world. There are no details on the aquarium’s other dimensions but it is conceivable that it might take one full time person just to clean the glass of this massive tank – by the time someone cleans the entire front pane of glass, it might already be time to start cleaning the other end. [ADA]