From Arcanet
The Conduit is a magical artifact attached to the top of the Council Spire created by Quin Aven. It is unclear whether Quin was locked away by the council as a result of, or in order to create, the device, but his hand in its creation is unquestioned. The Conduit is thought to serve an important role in the city's indefinite growth and teeming abundance. Due to the secretive nature of the council, and the isolated, imprisoned nature of the citygods, finding out more specifics about the Conduit and how it functions is near impossible.
It is believed the Conduit is pivotal to reabsorbing spent gloam in the form of haze and channeling it back into the city such that it can be reprocessed and used again.