Sweet potato is growing insanely fast

I heard growing sweet potato roots in the tank is good for absorbing nitrate, I happened to have a sweet potato that had starred rooting so I put it on/in the tank

What I was not prepared for how monstrous it would grow and so ridiculously fast i swear if see it grow its tentacles further out from morning to evening. Now im afraid it'll try to strangle me in my sleep.

I'll trim back the tentacles because it's really everywhere now but axolotl also like using it as a bit of a hammock. Anyone else tried the sweet potato?