I have one like this, I just choose 60 percent and it will maintain it til the water runs out.
Use ro water if you can, if you live in a place with heavy water you'll have heavy mineral deposits on your walls and tent and it can clog up ur carbon filter
I have Elechomes, since that’s the brand plants owners recommended on YouTube and instagram
I like that I can point the direction of the mist, and how strong and how much mist I want it to blow. Also can set the humidity level, so if you set to 50%, it will stop when it reaches that %, and it starts again when the surrounding humidity is 45%. I got the smaller one, 4.5 L. The only con is I have to flip the reservoir upside down to refill with water.
Elechomes HTJ-2119 Ultrasonic Humidifier 4.5L(1.19Gal) Vaporizer Cool Mist for Large Room Baby Bedroom with Remote Control, Large LED Touch Display, Whisper-Quiet, Child Lock, Lasts up to 38 Hours https://www.amazon.com/dp/B07VZLYY3Q/ref=cm_sw_r_cp_api_glt_fabc_8FEJWE8ZKE3DQS1RW613?_encoding=UTF8&psc=1
I wanted the 6L, since it’s top refill, but it’s too huge, and expensive.
Elechomes UC5501 Humidifier, 6L Warm and Cool Mist Humidifiers for Large Room Baby Bedroom with Remote, Customized Humidity, LED Touch Display, Black https://www.amazon.com/dp/B07H2529KP/ref=cm_sw_r_cp_api_glt_fabc_KT6P3ECDSEYXT1NDSA6Z