I brought this up a few years back, but can't find the thread. Not sure if it had the title I wanted anyway, so decided to start a new one. Has anyone ever done this? We never boondock and don't care about resale value. This is something that has been in the back of my mind since we owned the camper. Just that empty tank sitting there, while we drag around a 32 gallon tote. I feel like there must be a way to utilize it for gray water.