I should get a commission from Vicks based on how many people have bought those on my recommendation! $15 at most major retailers. They work really well so don't just put them in the tent and let them run continuously. Also it's actual steam so it will raise temps in a tent. In the room with the tent will work better if you want to do it more gently. Rooster started using it to raise the humidity in his entire house!cool mist vapor unit maybe Vick’s heard they are not that expensive eithier how can I get one to you @InTheShed