I am growing in DWC in a grow box that is
4ft tall 16 inches across and 9inches deep.
I am having trouble getting my humidity above 16%.
I have tried a bowl of water, misting, a wet rag and there has been no change. I do not have room for a humidifier. Any advice on how to increase the RA?
I don’t know if this will work with your setup, but it’s been working great at the intake of my tent. It’s like a miniature humidifier and is roughly a 6 inch cube