Why is my jungle/straight vallisneria producing corkscrew runners?

[Arleanna]

As you can see the rest of my vals are straight, but the one little one in the middle isnt?? Im confused, the only things i added to my tank were 4 large straight vals, and now one of its plantlets is a corkscrew lol. Anyone know whats going on, or had that happen to them?

 

[Bert2oo1]

Any other plants twisting or cupping? It can be caused by a lack of mg and calcium

 

[Arleanna]

Nope not as far as i can tell, even the other vals are fine its just the one runner. Ill put a pic of the whole tank sorry about the algae. Oh and i got the amazons from the store like that, the new leaves come in straight though

 

[Autumnsky]

Are you using any ferts, liquid or cap or tabs???

 

[Arleanna]

Nope, nothing