Agree a culture should be done two weeks after stopping antibiotics. I had a similar issue and the dog had a subclinical infection creeping into the kidney. Urine was clean until it was cultured and kidney ultrasounded. The dog required 6 weeks of antibiotics to clear it under the care of a specialist. Struvites are almost always the result of a UTI.
As for the struvites and high Ph and diet. If you alter the diet to acidify the urine, you could end up with oxalate stones. After about a year of battling struvites in my other dog, I found the best and most simplest advice I got from a vet was to liquify the diet. I used diluted chicken broth that I made myself. When I was in a pinch, I used diluted tuna fish water (no salt added, trader joe's brand).
Good luck
__________________ Washable Doggie Pee Pads (Save 10% Enter YTSAVE10 at checkout) Cathy, Teddy, Winston and Baby Clyde...RIP angels Barney and Daisy |