Stick answered grow question 3 weeks ago
Hi there! Well this seems complicated, since IN/OUT air-flow is 100% required for your plants. Buckets full of ice could work for a moment but you'll need to change it everyday few times a day. I see your tent has bottom windows, you can try to open them all first, then see how it decrease your temperature but I'm not optimistic without a real exhaust system. I'll be around, good luck with these beauties!