I dont really know
I have the smallest of the industrial ones
I am only using mine for the lettuce
for my other res or if in flood and drain
I wouldnt use anything
and if I had to....I would just use a cheap 50gph pump from harbor freight to mix the solution like 1 or 2x a day for about 30 min
as I talked to Chris from
Botanicare and he told me the only time you need oxygen is when your roots are constantly submerged
so my dwc only until the roots start to suck up the water and nothing else
once the roots start to suck up the water and there is exposure to the roots
the air isnt needed anymore