I've got 2 plants growing in a 75x75x130cm tent, 4inch rvk extractor, cple fans inside, up til now I've been using a 300w blue spec cfl and recently added a 125w blue spec bulb too on the side, temps have been stable around 25c and humidity has never really been a challenge. As one has started to stretch and pre flower I changed the bulb to red spec for flower so put a 300w red in and a 125w dual spec to replace the side light. Now my temps are hitting 28-29c even with vents open and fan on full. So for now I've taken the 125w out and the temp settles around 24-25c. I feel like I'll be missing out if I have to leave the 125w out as there won't be as much penetration around the plant. Although it is my first grow so I'd rather sacrafice yield than risk ruining it with too much heat. Any ideas for keeping it cool other than buying something pricey to control heat?
I've always had a passive intake through a vent hole, I have got a small 4 inch black orchid if the problem is not putting enough cool air in there, was almost against putting another fan in though due to noise.
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