I LOVE the Rialta. It has such a clever use of space. It is fun to drive and I hope you love it.
The grey tank is where shower and kitchen sink water go. The black tank is the poopy one. When you drain your tanks, wait until both grey AND black tanks are full. Then drain the stinky black tank first, then the grey tank to wash out the hose.
The panel back by the dinette (I think) will tell you when the tanks are full.
Getting them both full at the same time is the same dance I do in my 35-foot Class A.
Be sure to buy some product to treat and deodorize the black tank. It'll help break down the "stuff" that is in there. Be sure to use Scott
single-ply TP. It breaks down the best. Check your tires daily to make sure they are properly inflated to carry the weight of your Rialta.
That's it from me, for now. janice
That's it from me.