Recipe choice, but no input choice?

[Slightquills]

Filtration medium is often treated interchangeably, but it feels like dupes prefer using sand. This causes problems if, like me, you actually bother using a chlorine vent to grow saltvines. On a sand-starved planetoid, like the frozen forest, sand is precious. To keep the sand engine going with saltvines sand is required, but if the dupes keep prioritizing sand for working jobs, like water filters, and air deodorizers, you can end up running out causing your colony to collapse.
(Yes, I am aware I can grind up stone that's not what this is about.)
-I would like to be able to somehow prioritize, or limit, building maintenance tasks to regolith, freeing up sand to be used for saltvines. (much like recipes are selected at various stations)
-The alternative would be to just let us use the regolith to feed our saltvines, but somehow this feels less satisfying even though it would be an "easier" fix.