Does Dwarf Sag Usually Melt?

that's just the thing....I know these plants came from someone who was growing them in an aquarium, not emersed. just seems kind of odd.
 
I don't know how mine were growing before I got them, but the larger leaves did melt when I first got them, but after about a week I noticed new leaves growing. I just figured it was something they did, but then again I am very new to plants.

Good luck!
 
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