Don't forget to run water thru the outside shower if it has one. RV Antifreeze is Propylene Glycol, sometimes described as "non-toxic antifreeze". It is also the main ingredient used in the colon cleansing stuff that the doctors proscribe prior to a colonoscopy. (sorry, I just had to say it). It works by preventing your body from absorbing water. Just so you will know how it works.........
As others have noted, drain your tank, fill it with water, drain it again, refill it, use the pump to run most of the tank full thru everything. If you have an undersink filter, remove it, use the bypass plug in its place, and install a new filter when done. After you think you have flushed all of the pink stuff out, do a fill and soak with a heavy dose of bleach as others have described, filling the hose works well. Just have it somewhere where the water will run away from the RV, as you will be dumping ALOT of water.
Charles
