One thing about setting the diffusers up off the bottom is it will create an area of anoxic water below them. Or at least that is my assumption to get a thermocline and cooler lower water.
This is just thinking out loud. I'm not stating any of this as fact. Just discussion material.
So based on the above thinking there would still be the potential of a minor "turnover" of that bottom water. Say there is a big cold rain or maybe a really windy day after a long hot still spell.
Of course this lower water would be a much lower percentage of the total water volume that what would be without aeration, but there might still be an anoxic zone if the diffusers were high enough off the bottom.
Does this line of thinking make sense? Or am I splitting hairs? If it does make sense how do we manage around it? Or is it of such minor consequence that it is irrelevant?
Sometimes it seems like the more we know the more we realize we don't know. Or know just enough to be dangerous.
