Hello
In troubleshooting you can put a wet towel in your box that will increase the humidity in your tent you put it in front of the air or your fan
If not, you can buy that
€ 20,75 54%de réduction | Xiaomi Deerma ménage humidificateur d'air purificateur d'air brumisateur calendrier avec écran tactile Intelligent quantité de brouillard réglable
https://s.click.aliexpress.com/e/Lhc2rqzpD
Or a smaller one according to your needs
In the growth phase 🌱 your humidity should be around 70%
May the strength be with you 💪