Humidity not rising.

Just bought a small humidifier for my 2x2x4 grow tent when I realised my humidity was dropping.
Humidity was naturally at 42% 2 days ago now naturally stays at 30%.
With the humidifier I can only get it to around 37-38%.
Anyone know what I can do to increase more?
I’m still in veg stage

Mist your plants just water, will help raise humidity in tent.
I use an aquarium pump with an airstone in a tray of water, in tent, to help raise humidity.

Slowing your exhaust rate down will also help.

Get a larger humidifier, or get a bucket of water and let it sit. That will at least help until you get a bigger unit. A damp towel hung inside helps too. Just needs to be wet a few times a day but works.

i wouldnt worry about it. plants will be fine with 30% humidity as long as its not too hot. its 80f 30% here all the time and plants are fine.

Put a towel in a bucket of water and let it hang over side and point fan at towel. You can adjust how much towel is in water to try and get humidity you require