Best airstones/diffusers for aeration?
I have CO2 setup and I want to run a small air pump on a timer opposite
of my lighting schedule to help with aeration. Are there any particular
airstones or diffusers that are better than the rest? Should I put the
airstone or diffuser on the bottom of the tank or is it OK attached via
suction cup a few inches from the surface? Thanks for any input,
Scott
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