Originally Posted by ColdKoi
The air stone will gas off the co2
before the plants can utilize it. I think itís wise to leave surface agitation to the co2
diffuser and your filtration
+1 on this.
Surface agitation promotes gas exchange at the surface. So running an airstone while injecting CO2
will promote the loss of CO2
to the atmosphere which is counter productive. Also while running CO2
with suitable lights and fertiliser your plants will be producing more than sufficient O2
without needing to resort to gas exchange at the surface.
Its typical to run CO2
only while the lights are on and turn it off when the lights go out to conserve CO2
as it has no benefit in the dark. While the CO2
and lights are off, you can then run your airstone to oxygenate the water.