I just conducted an unsuccessful search, but I am kicking around the idea of adding a black water holding tank to increase the toilet useage/capacity. I see that there is a company that has several "stock" tanks as well as a custom mold option available. Has anyone actually done this? If so, how much work was involved? Will a stock tank work or is custom the only alternative? I was looking at:
http://www.incaplastics.com/rvtanks.htm
What are your thoughts?
Larry