Made a version of a swamp cooler today (minus the tub of water). First time using one. Today was cool outside. As a result my a/c wasn’t running. As a result of that my basement wasn’t as cool. As a result of THAT my batch of Tangerine Ravine warmed to 74 degrees. Day 2 of vigorous fermentation. I wasn’t worried about it going much higher but it was near the max of 75 for US-05. I set up a small fan, put a towel under the carboy, and every couple hours I’d pour water on the t-shirt. Enough to soak it. In 4 hours it dropped from 74 to 68. Success.