stem plant bend

[Green Baron]

I noticed some of my stem plants bend downwards in the morning but will revert to upright position in the afternoon. Any idea why ?

[benny]

Let me guess....

01. The lights are not turned on in the morning.
02. The tank is near a window (within 10 feet)

Correct?

Cheers,

[Green Baron]

Let me guess....

01. The lights are not turned on in the morning.
02. The tank is near a window (within 10 feet)

Correct?

Benny,

Yes and yes, but why only cetain species of stem plants do this ?

Hornwort, Cabomba, Ludwigia repens do not bend in the morning ?

[FishFan]

Eh? I've observed my Cabomba and Hornwort bending too.

[valice]

It is juz like a sunflower... before the sun is up, the flowers are down and when the sun is up, the flower seems to suddenly come up with life!!! It is probably the plants where to conserve energy or something... not really sure abot the biology of plants... maybe someone can explain better...

elodeas also have this problem... think plants with not solid stems have this issue...