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Re: How hot is too hot?
Your outdoor plants aren't doing the majority of their growing during the hot part of the day. They save it for the cooler parts of the day. Too hot is anything over 90. Trust me. Try to run 90+ in a grow room with a cool reservoir and you will end up adding tons of water to your reservoir to keep up with transpiration and if you miss a day your nutrient solution can become too concentrated and burn your plants. It's best to do it right and keep temps in check rather than take chances IMO.
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