CO2 and anabantids

On Sat, 23 Sep 2006 23:49:45 +0100, Nikki Casali
wrote:

Pete wrote:

I still loose a little CO2, but that's probably because I drive them
quite hard at around 8 bubbles/sec. This gets my pH down from around
7.2ish to 6.2ish within an hour of the lights coming on.

1pH? That's quite a CO2 loss. My tanks stay at the same level during the
night after the CO2 cuts out. I think that's because my plants produce
just enough CO2 to counterbalance the loss that occurs through surface
agitation. I have very little agitation happening at the water surface
though. How do you count 8 bubbles per second? My brain just don't work
that fast!

Nikki
Just checked the pH prior to the lights coming on - it was 6.4, so
it's only dropping by about .3 during lights-out (no CO2)

Pete