AGREE with aboveGet a cool tube one with a ballast that runs both HPS and MH. You will need an inline fan to run thru the tube. Also just looking..get rid of the light leaks in the tent. Duct tape
You could but remove the big jacket ,no roof just have sides, ballast away from the room and a large fan not that little one it doesnt move enough air around. Try to keep it cleaner , vacuum ,tidy up etc.
The one thing I do agree on is clean it up a little. You can go with either way I prefer HPS but that's meMost of the ones here are 6". As stated a clean grow area reduces pests.