Hydroponium
“ | Creates incredibly biodiverse wetlands in areas that are already waterlogged. Hydroponia can only be built on irrigators that are not on raised ground. | „ |
~ Hyrdoponium description in the Handbook |
The Hydroponium is a building in Terra Nil it is the only building that replaces a functioning building you've placed, you can only place it on the Irrigator if it is within 5 tiles of any source of Water tiles. It turns the nearby Greenery tiles and Wasteland into Wetland tiles. The Hydroponium is part of the Tier 2 buildings.