Derek,
Have you tried a water fountain? I bought a Drinkwell fountain on amazon and it works pretty well for my dogs. One thing to take note though is the filters used in them are carbon fiber and can actually make the water slightly more alkaline so be sure to test the water ph with test strips, use distilled water with it, or just don’t use the filters if you try them.
I know you asked if you should be looking into a urine analysis, but isn’t that how they determined your dog had crystals to begin with? It’s important to have re-tests so if it’s been awhile since one has been done then yes I would get one done.
