Cool.I wasn't aware that it works in reverse too!

"Dave Millman" wrote in message
...
Frank Mamone wrote:

I thought it's best to keep surface agitation in a planted tank to a
minimum
as to keep whatever Co2 is available to the planted, especially if you
don't
have injection.

There are two cases:

If you DO NOT HAVE CO2 injection, then you need surface agitation to
maximize
CO2 diffusion from the atmosphere into the water.

If you have any type of CO2 injection (DIY or pressurized), then you want
to
minimize surface agitation to minimize CO2 loss from the water.