I want to increase the evaporation rate in a tank by blowing warm air over the surface of the water in the tank; this will (hopefully) agitate the water, increase the airflow in the tank, and maybe heat the tank slightly. How could I do this?
The main goal here is not to heat the tank, but to agitate the water in the tank. The fan/device/whatever works has to be somewhat small, in addition, and it should blow without human assistance.
Thank you for any and all help!