Drinkwell Additional Capacity Reservoir

After experiencing how great the Drinkwell fountain is for our cats, we decided to get the add-on reservoir to use during our vacation. It's nicely sized at 70 oz (that's over a gallon!). I got it, and some filter packs from a seller on Amazon that had free shipping.
It's really easy to install, too. Just fill it up, and quickly turn it over to snap onto the back of the fountain.
We had a friend come by to feed the cats and check the water level. I think she only had to put a glass of water or so into the fountain.
The reservoir also allows yo to see just how much water your cats are drinking.
In our case, we are happy to report that they are drinking lots of water :)
This fountain has been an important find for us, and the reservoir just makes it even better.
Would highly recommend, especially if you are going out-of-town for a few days.

Pros: Provides extra water if you're unable to refill right away

Cons: Can't think of any

a must have for your fountain my cats drink a lot now

Pros: helps with refilling

Cons: none