[Cap10Squirty]

I have noticed this ever since I have planted Limnophila indica in my tank, that it "opens" its leaves in the morning and starts to close them just before the lights go off (about 30 minutes to an hour). Does this correspond with lights or CO2 coming on and off?

When the plants close up they look exactly as if you were holding it upside down outside of the tank.

 

[Darkblade48]

It would correspond with the lights coming on and off. Plants too, have a circadian rhythm.

 

[Cap10Squirty]

Awesome. It's so neat because they start to "sleep" before my lights even turn off. I guess this shows the importance of keeping things on a schedule.

 

[neilshieh]

This happens with all of the stem plants in my tanks except for my h. lancea and hyptis lorentzianna. My limnophila aromatica, ludwigia suffruticosa, rotala singapore, and rotala macrandra all do this. very interesting!

 

[Solcielo lawrencia]

Technically, what determines when it does that is not the photoperiod, but the dark period.

 

[samee]

Im guessing you meant the rotala indica?

Lots of plants open and close, its really cool.

 

[Cap10Squirty]

Me? No I meant Limnophila indica. My Rotala indica doesn't do this actually

 

[Smeagol]

Yep, I just noticed the same thing. I have Limnophila aquatica in my new tank. I didn't know about the "opening and closing" until I used a flashlight to look in my tank in the middle of the night. Very cool.

 

[Cap10Squirty]

It really is neat. Mine actually closed a fallen ludwigia repens leaf up inside of itself, like a Venus fly trap