Originally Posted by Brookster123
I don't think the cover is going to have any real bearing on oxygenation... more so the distance of the the waterfall.. the lower the water level.or higher the plunge the more oxygen exchange...
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Now that's a new one. That must be why AquaClears and Fluval C's make that annoying trickle sound and those hateful air bubbles unless you fill the tank up to the brim. I thought it was a design defect.
That being said, I keep both tanks as full as it takes to get zero air bubbles and "splashing noises." Since fish are healty, I'll just keep it that way.