I just dropped my water tanks, to work on the floor above, and install my new see level gauges. I noticed something odd to me. Their sizes. My freshwater is 26 gallons, grey is 14 gallons, and the black is 30 gallons. This looks backward on the grey and black. They are from Ronco Plastics and the sizes are stamped on the outside.
My shower & sink are plumbed into the grey water and the black only has the toilet. So, for those of you with more experience on these, have you ever seen the shower plumbed into the black water tank? I am considering doing so when I re-install them. That, or maybe increasing the size of the grey water. I would think the grey water should be the larger of the two. The shower also has it own interior vent and I don't think it needs it. The tank is vented out the roof on the other end Any feedback would be appreciated.