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Hey DGC! I have an 8×8 Gorilla Grow tent in my garage, but the portable AC is having a difficult time keeping it cool on warmer days (+80 °F). The AC is vented outside and I’ve double checked for any heat exhaust escaping. Unfortunately, a mini split is out of the question due to the cost. Has anyone tried foam board insulation (like R-Tech insulation sheathing) to help keep it cool? Any other suggestions?