Vinegar and water half and half is great to treat fungus.
This can be put in a spray bottle and applied to affected areas.
ie athletes foot. etc. it works because fungus cannot grow in acid. and vinegar is slightly acidic. Also change your blood PH. to make you blood more alkaline drink water with lemon, or baking soda.

I say tap into the pipe or pipes for some electricity.
i would use s small amount constant electricity that is free after set up costs.