[C4D]

Unfortunately, Dalmations are one breed that has a tendency to form stones. If you feed a fresher diet as opposed to dry kibble, it will help in keeping fluid in the system to flush out the stones. Of course you still have to watch the purines. Most of the dalmation breeders recommend poultry, eggs and cheese as it’s lowest in the purines. Many seem to recommend distilled water also.
Here are a couple of links that might help you out:

http://www.whole-dog-journal.com/issues/13_6/features/Kidney-Stones-Bladder-Stones_16231-1.html

I don’t use Flint River Ranch food, and it only gets an average rating on this site, so I’m not sure of the food, but the site has some interesting information:

http://www.aplusflintriverranch.com/article-healthydalmatiandiet.php

There are several dalmation sites if you google that offer some good information. Good luck with it!