Humidity seedling stage

To simplify humidity charts aside, keep it under 80% and over 50% in veg and do your best to keep it under 60%and over 30% in flower. If you run high humidity in mid-late flower you're flirting with bud rot. In veg I aim for 60% but you'll be fine anywhere between 50-80%.

Humidity is always important. I see you are growing an autoflower. 60-70% is ideal in the early stages in my opinion. You don't want it to humid you want them to feed. Starting in weeks 4-5 you can lower down to 50's then down into the 40's after week 6. You wanna finish them up around 35-40%. Best of luck with your grow.

https://www.growmart.de/blog/wp-content/uploads/2019/04/vpd_1degree.gif here is a nice chart you can see all in dependence of your temperatur