Grey water tanks in 2007 hideout 27B

[GtrailCA]

Hello everyone
I'm trying to understand why the 2007 hideout 27B has a smaller Grey water tank that the Hideout 19 FL ( 38 Gal vs 70 Gal).
Does anyone know?
Also is there the possibility to fit a larger grey water tank on the Hideout 27B (2007).?
thank you
G.

[chuckster57]

I don’t know for certain, but I’m guessing with 70 gal there is two gray tanks.

I’m getting with a 17’ trailer there isn’t much room for a bigger or additional tank.