chasv77answered grow question 5 years ago Depending on where you live, humidity levels can be a real challenge.
I live in a semi-arid area of the States, and my avg humdity is 40% for veg, and 45% for flower.
I've tried sponges, open containers, etc., with no real improvement.
I have successfully only improved humidity, when using a portable swamp cooler, for a summer grow.
With using a heater in the winter, my humidity levels plummeted(30s). Only when the plant gets large, and you are watering more, transpiration will increase your level.
Try using fabric grow bags in the future, they act like wicks of the moisture in the soil. You'll have to water more often.
In the end, I still get great buds at harvest. Would have more humidity helped plants grow/buds fatten? I am not sure.
Good Luck and keep growing. Don't sweat that humidity detail, until you harvest, and see what you have.