Well I amd using a 1.2x1.2x2m tent with 600watt light without cooltube and a 4" extacor fan sucking through the carbon filter at the top of the tent nd couple of ducts open this was at 36.8 Celsious since then I've got a 8" desk fan at bottom pointing at light it has a high and low setting it was on the low and it took it down to 34 Celsiois then switched to high now at 30.5Celsious 87.2F I have another 8" desk fan but do I need it and on what setting please help??? First Timer Grower
87 degrees is too hot. At that temp you will have slow growth, reduced yield, airy buds and likely fox-tailing. You need to bring the ambient temp of the room that your tent is in down or you need to set up a cold air intake. Also a cool tube would likely help a lot. If none of that is doable you could supplement with co2 which would allow you to run 90 degree temps. Sent from my NSA recording device.