Hey gang, I'm new to this forum, and newish to the indoor grow world. Before I waste anymore $, I'm asking for your help. Google isn't cutting it this time. Feels like friends of friends that "know it all" are giving me advice all over the spectrum. Here are some of my factors- I live in New England, and the indoor grow room is in the 2nd floor spare room (i don't have a basement) that has radiant heat that keeps the room at a consistent 70 degrees. The way i've framed and built my room(s) is the following: walk in the veg room that is aproxx 4'deep X 7' long 6' ceilings. It has an exterior window that is right above my entry way (hoping to keep this window as discrete as possible) VEG ROOM - I have aproxx 4 younger plants that are in soil. Sometimes more if I've got clones going. This room operates fine. Temp is easy to control, plants thrive, humidity is ok. I have a couple low end UFO full spectrum LED's for lighting. An oscillating wall mount fan. So you walk THRU the VEG room to get to the FLOWER ROOM. FLOWER ROOM - (Where I need the most help) this room is 6' deep X 5' wide, 6' ceilings. I have a door separating the 2 rooms so no light gets thru. This room also has an exterior window. I use a 600W HPS light with 600W ballast. Again, typically 4 mature pants in this room at any given time. I have a ceiling vent into the attic space. I have a 6'' vent hole that can be open or closed between the 2 rooms (it's located at the top of the wall with black out material to avoid light transfer.) My issue is setting up my fans, duct work, filter etc. and mostly keeping the temperature under 90. I had all used fans and equipment so I thought that was the issue, they weren't powerful enough so I went out and bought all brand new stuff. And I don't know what to put where, or how the "flow" should be. I like to think of myself as a half smart young women, but this has me frustrated to the max- I can't seem to wrap my head around how to set this up! I have a 6'' inline fan from ipower, with carbon filter, the 6'' duct to go with it. I also have a new 6'' AC In Infinity CLOUDLINE fan with thermostat and cooling/heating ability. I haven't even taken this out of the box yet as I want a plan before I start thinking I can figure this out again. Before I created 2 rooms in my house, I had a 4X4 grow tent, and I was able to manage that with no issues. I had a small veg box that worked like a charm. The smell was a little out of control, and I found myself wanting to have higher yield, that's why I went bigger. Please, don't publicly shame me for what I've done wrong- I'd just like some insight on how to do it right. I know fresh air is important, but safety is even more important and when I came home the other night and my grow room was 120 i unplugged everything and I'm hoping now I have the right stuff I can get a better understanding how this needs to work. I also have a bunch of other inline fans, 6'' mostly. thank you for your help!