Does anybody know which kind of photosynthesis cycle most waterplants use??
I guess it's mainly the C3 cycle.

But I remember to read something on the net, but don't remember where
:-(( about waterplants using the CAM-cycle (Crassulacean Acid Metabolism).
This would mean those plants would store CO2 at night and use the stored CO2
for the photosynthesis proces at daylight.

If they use the CAM-cycle I guess it would make sense to keep dosing CO2 in
the night period??
--

Mazzeltov, Adriaan Briene
http://members.lycos.nl/brieneoord/aqua/