Shorty wrote:
Yes, another question ...
When starting a planted tank with a few fish. How much aeration do I
need? I want to minimize surface turbulence to keep the injected DIY
CO2 in the tank.

I am using a canister filter. When I make the spray bar move the water
without disturbing the surface I get bubbles and some living things
floating at the surface. When I move the surface around, the stuff seem
to disappear.

You need enough to keep your fish from gilling hard and/or gasping at
the surface in the middle of the night when oxygen demand is highest and
production lowest. Gently surface movement is also nice to prevent
surface "scum" from forming.

--
Elaine T __
http://eethomp.com/fish.html '__
rec.aquaria.* FAQ http://faq.thekrib.com