The 4 x 8 tent was running around 82 degrees constantly and would raise to the 90’s sometimes when things shut down. Started leaving the exhaust fan on but 80’s would stay for a while. The 600 watt HPS was not running through an air cooled hood. I also didn’t feel the tent was set up the most efficient way.
Before:
Removed the 600 watt HPS. Centered the LED light. Added a small cheap LED for a couple of the extra plants on the side. Moved the exhaust system to the back wall of the tent and vented it through the top instead of the side. This brought the temperature down to 77 degrees. The RH is 48% I will be adding another larger LED to the big tent.
Now
I moved the 600 watt to the 4 x 4 tent replacing the 400 watt and used the air cooled hood. This raised the temperature in there from 75 to 78 degrees. Moved the duct work from the side to the top also. Eventually I will replace the HPS with a LED.