I dont think i would put 2 gallons of bleach in my tanks. Run that stuff throught the
pumps and then replace the
pumps. Try to use only 1-2 tablespoons of bleach and see if that works. If you still get a ****y taste, try the fresh water tanks and not the
holding tank. also have you thought about an inline filter for the sinks? check with the head mistress peggy at sailboatowners.com for real helpful advice (i think she is the utmost authority on fresh and other water)
cole