Humidity help

A wet towel hanging from your tent will raise your RH but to keep it high. Close your grow room door. Also, as your plants are seedlings your using a low ppfd, so, you can turn your exhust on a timer. 15 off 5 on. Or if you can push that longer, "do a few temp checks when doing this" this is the best way to keep a high RH. For temp control though, your light must be low or have a clip fan blowing directly on your driver, "assuming you using a led" as your plants are young. Feel free to DM me regarding any of this. Good Growing