Oh I forgot to edit my comment about Gleba rain. ^^'
You didn't specify on your mod description that dust particles happen on Fulgora, Moshine, and Corrundum, only sandstorms.
Acid rain would be coherent on Corrundum, since its atmosphere mainly composed of sulfur dioxide and sulfur dihydroxide.
I don't know if acid rain could happen in Moshine, I suppose that since it's similar to Vulcanus, it might also have similar atmosphere.