Humidity question

I'm having trouble keeping the humidity in my tent up. I tried putting a bowl of water in there and some wet sponges it didn't really help at all. I tried spraying water in the air that also didn't help. My exhaust fan is running full blast right now. Could that be the reason? If I were to get a active speed controller for the exhaust fan and turn the speed down would that help me get the humidity up?

Your exhaust fan is part of the problem. If you need to get the humidity up get a cool mist humidifier. Alot of factors to be considered.

Ultrasonic fogger system.from houseofhydro.com
I run their 12 disc system

Yep use a ultrasonic fogger... if you have a medium grow room you can get one very cheap