An adjective describing something having high flow.
Wikipedia describing flux of liquid in physical context:
Flux is defined as flow per
unit area, where flow is the movement of some quantity per time. Flux, in this
definition, is a vector.
"That thing was so fluxy I could've swam in my mind by only thinking about it."
"The material looked so fluxy I thought it was
liquid, but it was actually just a
flat surface with
light projected on it."