why not disable pollution on such surface instead this should also save tons UPS.

players could disable that for their entire save yes, this mod is for when you still want pollution to play a role in dealing with biters until you clear a planet.

We can't disable pollution by surface ? I though it was possible since fulgura for example doesn't have pollution

Unfortunately read only... https://lua-api.factorio.com/latest/classes/LuaSurface.html#pollutant_type

yeah it's by planet prototype on startup, not much that can be done during runtime

https://forums.factorio.com/viewtopic.php?t=133580 nice

ah yes i was aware of that but didn't know it was public information yet, sweet