Plant looks great Ajay! Are you getting good flow through your filter? Could be that you are going to have to upgrade to keep the heat down. One thought as I was reading, just for a short time, disconnect your filter and run straight through to see if unrestricted flow will keep the tent temp down. If so, you may just want to go to a higher flow filter. Granted, the filter is going to cost you a little more but look at it this way. You will have more surface area of carbon so it will last longer. The upfront costs may be a little more but you won't have to replace it as often. With the room being that much cooler, that is the only thing I can think of, restricted air flow. Best of luck bro!