Original Waterfill Mod: https://mods.factorio.com/mod/waterfill-2

Please give credit to the author of the Waterfill-2 mod. This mod is just for folks like me who were disappointed to find there was no AmmoniaFill mod as of 12/4/2024@10:00AM(EST) ... Now there is, and anyone looking for one can now enjoy.

It is my personal recommendation to pair this mod with the following mods for all your terraforming needs:
LandfillOnLava - https://mods.factorio.com/mod/lyra_landfill_on_lava
Lavafill - https://mods.factorio.com/mod/lavafill
Waterfill - https://mods.factorio.com/mod/waterfill-2
Oilfill - https://mods.factorio.com/mod/oilfill
GlebaSoilAnywhere - https://mods.factorio.com/mod/gleba-soil-anywhere

[COMPATIBILITY ISSUES]

Nicefill - https://mods.factorio.com/mod/nicefill-scriptfix
I am unsure which mod conflicts, but running the above 5 mods along with Nicefill caused crashes while using fill blocks. This was present before altering to make AmmoniaFill. Nicefill is the only known compatibility issue as of testing/uploading.