Do I need to be concerned???

[JDogg]

The tips of my Camboma has clamped shut! i first noticed this last night..see pic!

 

[nitrous]

that happwns to my hornwort at the tip-s and then a new set of leaves come out so maybe thats how they get bigger?

 

[sherry]

cabomba does taht every night.

 

[BlazerFRS]

Many aquatic plants will close at night, just as many terrestrial flowers close at night.

Nothing to worry about

 

[malkore]

Yep, it should normally do that shortly before or after lights out every day