How water plant absorb CO2?

[Shadow]

How does water plants absorb CO2? Using its leaf or root?

[XnSdVd]

It uses the stomata in the leaves. Just like terrestrial plants.

[Xema]

Stomas is an aerial organ which is not necessary under water... True underwater plant have not stomas... They can take it throught roots and leaves...

H2O + CO2 <---> H2CO3
H2CO3 <---> H+ + HCO3-
HCO3- <---> H+ + CO3=

[Shadow]

Would it help if I direct CO2 to soil? Actually direct the filter output to the soil, CO2 was mixed with water using external reactor.

[XnSdVd]

But Xema, aren't all our aquarium plants, except things in the Blyxa genus, terrestrial plants that can grow submersed?

Then again, i had no idea plants didn't need their stomata underwater. It'd be interesting to see if Crypt leaves loose them once they turn into their submersed form.

[Xema]

except things in the Blyxa genus, terrestrial plants that can grow submersed?

That´s a risk reply... What do you think about genus as Vallisneria, Cabomba, Nymphaea, Utricularia, Ceratophyllum, Najas, Egeria.... and so on???

It'd be interesting to see if Crypt leaves loose them once they turn into their submersed form.

Pobably they lose most of them...

Stomas have a important role in the water flow into the plant. It is flow from the soil to the atmosphere throught thin tubes (micro-tubes), from the roots to the leaves. Water is evaporated in the leaves doing a flow from the soil, as you drink juice with a cane. Obviously that is no matter under water... nutrients are around the plant in the water, doesn´t need catch up from the soil.