I have a 1987 340 EC. The shower sump is in the front part of the bilge and there is always some soapy water. Also, the shafts drip some a water accumulates around the rear bilge pump and there is always a little water there. I tried using clorox tabs to help kill any bacteria but that also attacks the wire on the float switches. Is there any available product to put in these two area to help combate stagnate water and bacteria?