I hate saying this so causally but You need a better fan…. Not too long ago someone’s advice to me was you need to make more money.. I thought how fucking contrite of this asshole but after awhile I realized he was right and it was the best advice I have ever been given.. so you need a better set up all together. An in-line duct fan that moves no less than 50 cfm would probably do but 150 would be better