Ok mister Buffet I have an idea. Now for starters I want you to know I know almost zero about aeration (keep tht in mind). Would it be beneficial to put 3 diffusers in a small triangle. No clue how close I'm talking about maybe 20 feet apart. Close enough they would help each other out keeping a huge hole open. If it a stupid idea feel free to tell me. Lol wont hurt my feelings like I said I know next to nothing about this stuff.

Edit - Now dont get me wrong I'm not suggesting you try it ar this point in the year. No reason to get crazy lol.