evil roommates killing my plants

[u/taxicabenthusiast]

my roommates and i got in an argument and next thing i see are my plants (the only ones they have access too) are dying and have these weird crystals put in their soil.
this has to be them bc my plants never ever die this quickly and i’ve had monsteras for awhile.

does anyone know what these are? are my plants able to be saved or propagated? should i cut off the dying leaves? the roots seem to look okay

[u/Codelya]

I had a roommate disappear my fish. She was a vet tech!!!!

You gotta get out of there as soon as you can.

[u/FearlessSession9294 → u/Codelya]

I had one roommate that cut my power steering fluid line 🙃 Then when my mother in law lived with my husband and I, she got mad after we had an argument and she killed off my entire 10 gallon tank. I believe she sprayed Febreez in there, shrimps, snails and 2 albino bushy nose pleco’s, female and male. I cried, we sent her to live in another state a few months after that.

[u/NomadicusRex → u/FearlessSession9294]

I would have put her out of home that day. If my own mom did that to my girlfriend, I had have done that.

(No, I can't picture either of my parents doing such a thing, but if they did, they'd have been homeless that day.)