Water Tank Size

[The Norconians]

Hi, everyone,
We bought a used Casita 17 LD and are wondering if there is an easy way to determine the water tank size. Tried calling Casita and after multiple unreturned calls they seem to be too busy to help us out. I guess I can always fill the tank and measure the number of gallons it takes, but thought there may be a quick way to do it.
Thanks for any help.
Norconians

[Ziggy]

They come standard with a 16 gal tank but a 25 gal tank is available as an option. Open the storage bay on the curb side. If the tank blocks a good portion of the bay door you have the 25 gal.

[Ian G.]

I know on my FD It was real easy, open the outside hatch and look in, if the hatch area is open and you can only see the side of the water tank you have the standard 16 gallon fresh water tank, If the majority of the compartment is filled with the fresh water tank then you have the optional 25 gallon tank

[The Norconians]

Thank you so much. Seems we have a 25. We love this forum for newbies like us!