Get a vent with a sensor set it at what ever humidity you want have it vent outside done. I have a 8 inch blower vent with 8 inch duct work with a sensor for temp and humidity in a 20x20 room it gets the job done fast. room Is sealed also to not let affect other parts of house .That's why I don't understand why people have no lids on there tank so bad for house and ac it will affect house in future salt air . A skimmer can bring in oxygen to tank, I have lids also on Tanks to save house repairs in future no problem with oxygen or tanks.Even BRS guy that has that new house put a lid on his tank because he know the problems salt air and humidity can do to a house. If house needs repairs don't tell insurance you have a saltwater tank with lid off they will not cover repairs for house. A lot Less humidity with top also.