Ok, so ive had my grow tent with 2 fans in it and 2 500 cfm inline duct fans and my 400w system in it consistently getting 85-92 degrees in the middle of the day. Well i ran across a cheap 6500 btu window a/c unit. well my boy made me a bracket that funnels the air into a 4 in duct that gos to the grow tent. well i have the a/c set to 60 degrees, and my temps are about 81 deg and higher when i hooked it up ton. Any ideas why? I even unzipped the front and put a fan in to suck in air, and it only got to 81, when i zipped it all the way closet..etc like it should be it was around 87 88 deg.......I have no idea what else to do, any ideas PLEASE...??!?! THANKS IN ADVANCE!