My tank has a built on hood with the filter and light built into the top. I would like to add more air to the tank than the aeration provided by the power head provides. I can modify the hood so that it will accommodate an air filter about 3" x 3" x4". It will never be submersed but it will be in a very moist area - there is condensation on the bottom of the top of the hood, and may occasionally drip down onto the pump. Would this be fatal to the pump?