Originally Posted by ctpres
Just did quick look and KT seems to be only one with 80 gal gray/two tanks
I have a 37YT and it has two tanks. Both forward tanks are grey. The front ( a 3"valve) is for the kitchen sink and the shower, the other is for the washer and bathroom sinks. The black tank discharge is by itself located behind the wheel.
It was very confusing at first because although both grey tanks come together with a common discharge, there was a black handled 3" valve and a 1 1/2" grey handled valve. Come to find out they were supposed to replace the black handle with a grey one. Sure wish I had a grey tank hooked to the black water discharge because it's so much easier to rinse out the hose.