Two gray tanks?

[Guapotims-FRF]

What is the purpose of my Shadow Cruiser 285RLS having two gray tanks?

I'm not complaining, just curious. Also, why is one on its own drain thingy

while the other gray and the black tank are on their own drain thingy? :?

 

[GWSCOTT]

2 grey tanks

I have a Fun Finder with 2 grey tanks. The purpose I believe is to keep from having your sink and shower fill one tank up too soon, especially if you take long warm showers like I do. I would assume that the reason for 2 seperate drains is to keep from having overfill if only one drain. I use two seperate lines with the accordian hose racks and it works great. On one trip I made with my old FF which only had one and there was not full service at the campground my one grey tank was completely full and my wife put a rug in the shower which as you can imagine got soaked

 

[Guapotims-FRF]

Ah, yes. Dry camping. That would explain it well. My wife isn't interested in such, so I haven't been. OK! Thanks!