I’m just starting to get back into growing mushrooms and have a few Oyster blocks ready to fruit. Problem is the temperature in my house/grow tent is usually in the high 70’s or low 80’s (f), and the humidity is in the 30% range. I figured a swamp cooler could help with both of these problems.

I’ve made DIY swamp coolers using a 5 gallon bucket in the past, and I nearly did that again this time, but I’m trying to learn CAD so I decided to try and make something and print it instead of DIYing a 5 gallon bucket. Besides the fact that the integrated tubing inside the print is basically impossible to clean it is working well!

Here’s the humidity and temperature graph over an hour after turning on the device.