I took my female in for her wellness exam and everything came back great except she has a high urine PH. My vet suggested changing foods. He said the high PH isn't so bad but she had some crystals awhile back and was put on antibiotics. He said there's a chance the crystals could come back. My male had a high PH as well but no crystals. Since they both had a high PH he thinks it's the food causing it. Has anyone else had any experience with this? I hate to change their food because they do so well on it.