Ok, now that I know I need to have equal or greater capacity for the holding tanks. I've been scratching my head trying to decide on what to do about the holding tank configuration. Here is the dilema:
1. Original plan was 35 gallon black tank from RV surplus and 75 gallon fresh water tank used for grey water. BUT.. $233 JUST TO SHIP THE 75 GALLON TANK!!!
It has to be freighted. So I am looking at over $400 for those two tanks.
2. 35 gallon black tank (RV Surplus), 40 gallon fresh tank for grey water from Tri-State-Rock-Your-World and a 21 gallon tank connected to the 40 gallon tank.
Problem with this option is now I have to run 3 vents for 3 tanks, connect the 2 grey tanks together, make framing for about 9 feet of tanks.
3. Combined 105 grey/black tank from rvexit on ebay for $300 shipped. I don't think that is too bad for a $105 gallon shipped. But is still a bit more than I want to spend.