moistenland Reptile Humidifier, Misting System for Terrariums, Automatic with Adjustable Spray Nozzles, Black

Searching for your solution I found these options - misters - https://www.amazon.com/Reptile-Humidifier-Terrariums-Automatic-Adjustable/dp/B09KX9YFWW/ https://www.amazon.com/Humidifiers-Terrariums-Humidifier-360%C2%B0Adjustable-Rainforest/dp/B09WXZPP81 humidity controllers - https://www.amazon.com/Humidity-Controller-Inkbird-Humidistat-Pre-wired/dp/B01J1E5LWM/ https://www.amazon.com/DIGITEN-Controller-Humidistat-Temperature-Dehumidifier/dp/B0DLK14Y23 reptile foggers - largest capacity i've seen is 4L but they're open top so you would have to deal with evaporation. I don't think you'll get 3 weeks out of this option. If you want to go crazy DIY you could build a setup with a float switch for an "ATO" or automatic top off commonly used with aquariums and a larger reservoir to top off a reptile fogger. I would only go this route if you have adequate time for testing. Herpetology and aquarium goods will probably be the areas you want to look in, though the issue of course will be the length of time you are gone.

moistenland Reptile Humidifier,... https://www.amazon.com/dp/B09KX9YFWW?ref=ppx_pop_mob_ap_share I just got this one when I got my gecko because I’m used to snakes and don’t have a daily thing for them. It’s been good so far. You can set it on a timer or start/stop it manually.

moistenland Reptile Humidifier,... https://www.amazon.com/dp/B09KX9YFWW?ref=ppx_pop_mob_ap_share This is the mister i got! It’s been working well so far. It’s got a timer and a manual option and isn’t insanely expensive.

I got mist king fired my paludarium but this budget one for my terrarium: moistenland Reptile Humidifier,... https://www.amazon.com/dp/B09KX9YFWW?ref=ppx_pop_mob_ap_share I have to say they both work equally good. $30 for the budget one. And if you want WiFi control it’s $45