No no I seen his humidity levels need to go up 27% not good for roots to do their thing correct?
RH being low, in my opinion based off first hand knowledge of running most of my 1st veg cycle in a New England winter with RH between 16-24% for most of the entire veg cycle, is the least important factor behind the plant having good light and good nutrients, good air circulation, and good temps. RH to me is least important. It will slow the growth rate down perhaps a touch but to me thats a simple fix....grow the plant an extra two weeks in veg to compensate.
Now when it comes to flower time, really high RH can be far more dangerous than low RH during veg.