I had a huge problem with humidity as well. I ended up using a normal humidifer and used plumbing pipe to rig it up to the tank. Now I have a direct injection pipe into the tank that is on a timer over 24 hours. I used to not be able to keep my humidity over 35%. Now I can adjust it within 2% of the desired humidity I would like. I keep it at 70% right now, and my bp seems to be happy. If you want I can post pictures of my rig.