I wonder if one of those desktop coolers ( like the ons for 1 can) could somehow be hooked up to cool a seeam air tight grow box/// use co2 paintball tank for added air inrichment, but will also cool the air....
DRY ICE works great... wont disturbe your humidity, cools your box. but it evaporated within a few hours...

CO2 will allow a plant to withstand hirer temps

__________________
everything i say is a lie