Thanx for the info Tom and Victor !

So it seems it makes no sense even if I had plants capable of CAM and I can
keep on dosing like I use to do it.
(Regulating the CO2 on the pH value measured in the morning when the lights
are still out, gives a "natural" level of about 5-10 mg/ltr)


It was very interesting to read some aquatic plants even use the C4 cycle,
didn't expect that :-)).


--

Greetings from, Adriaan Briene

Aquariumhobby, Nijverdal www.aquariumhobby.nl

" schreef in bericht
om...
snip /snip
C4 is more prevalent in aquatics(Hydrillia, Orcutt grass etc).
There is also bicarbonate usage which differes from C4, the effect is
rather similar. It suppresses the oyxgenating activity of Rubisco(the
enzyme that fixes the Carbon) and lowers the CO2 compensation point.
CAM plants do this _temporally_ within each cell. C4 is _spatial_
within the plant rather than temporal.

But adding CO2 during the day is the only thing folks need to do.
Regards,
Tom Barr