Can never keep temps down without ac

Sup guys.. so I finished building my stealth grow cabinet and it looks pretty good.. only problem I have like always is keeping temps down.. I have an exhaust fan that’s more than enough for my little grow space, oscillation fans and air vents for passive air to come through. First I figured it was because my intake hole wasn’t bigger than outtake hole so I made it twice as big like it should’ve been. temps still reaching 85+.. I feel like I’m doing everything right but still no results. It has to be another way without using an air conditioner ‍. Only thing I think could be causing this is too much light ‍ Any suggestions would be love .... oh I have 2 450w LED lights inside a 2.5 x1.5x3 ft area ... 2 4 inch ventilation holes along with the one in the middle.

3 threads, same subject

Go with the flow let the heat rise

If your lights really draw 900 wats, it's too much for 3.75 squarefoot space.