I put little holes in the returns to push air through, like a Venturi kind of thing. I’ve found that after doing this I can increase the flow and it doesn’t blast the aqua soil every were, it seems to slow it down. The only issue I have had is one of them likes to spit water, so I’ve had to put a little airline tap on it.
the little aire hole give this effect on the return water when it enters the tank
yeah thats duct tape, i didnt want to glue them so...yeahhhhh
i have the air running around the room in a loop, i was told this would cause even preasure though the system.
as you can see i have room for 2 extra tanks in this pic,the bottom is the same, i plumed them in from the start to save time later.