What is this comming out of the plant? (with pics)

[UnderWaterDiver]

Hi All,

Yesterday night when I looked into my tank (I had do do some urgent thing so i turned on the light) i saw these bubbles comming out of the plant.
I wonder what is it? Is it oxygen? I know plans make oxygen but you can see it like this?? It was bubbling a long time so I took some pic's, and after i finished and went to sleep it was still bubbling...

And some over view shots...

Oh.. was pritty diffuciult to get these pics, because it's very small and at night so not to much light and i don't have a flash...
Made these with Nikon D70 + 300mm Sigma macro lens on 1600 ISO (for the interrested ones )

 

[Bk718]

yup oxygen

 

[Mgamer20o0]

yup oxygen

 

[chonhzilla]

Awesome bubbling action you got there.

 

[UnderWaterDiver]

Hi,

Thanks for the confirmation that it's oxygen.
I guess that that is a good sign???

 

[Mgamer20o0]

yes

 

[KarlTh]

Often happens where there's a small wound on the plant I find.

 

[icemanx23]

your bacopa carolinia is photosynthesizing. 6co2+6h2o=c6h12o6+602.

 

[Ezekielz]

Thats awesome!

 

[UnderWaterDiver]

Oh, One more question..

Is this related to water changing?
Because i noticed it after i finished a 30% waterchange.

Last night i checked again, but non of the plants did it.