What I was trying to do was save on initial set up cost. My plan was not to use the toilet for "poo" but rather only put "pee" in it. In that sense, I guess rather than a black water tank, we could call it a yellow water tank.
There are other toilets close by that I could use if I needed to have a BM. The reason I was going to go to that hassle is because I have two grey water and one black water tank. If I let them fill to 3/4 and then dump them as recommended, I would need to buy heat pads/blankets for them. Also, I don't want to go out in 2 feet of snow and remove skirting to dump them every few days so I have to replace the manual sewer dump valves with electric ones. Total cost for 3 tanks is $750.
However, I it wasn't worth the hassle and they are installing the heating pads and valves now. So, the yellow tank will be able to be used as it was intended as a black tank and we can poo all we want without the dreaded mountain. Thanks.
Now that the black tank issue is resolved and the rusty pipe issue is resolved, does anyone else have any advise for me to be able to live in the rig year round without costly repairs?
For example, some people say duct tape over the top half of the refrigerator vent while others say stuff insulation in the bottom half of the vent compartment. Which is it, bottom or top?