[theBCnut]

Definitely go back to 25/75 until stools are solid. You can add a spoonful of canned pure pumpkin to each meal to help. And adding probiotics and digestive enzymes will help his system adjust quicker. Many times new animals need time to adjust to new situations before feed changes. The new home alone would cause a certain amount of stress which will loosen stools all by itself, then adding the physical stress of a food change on top of that was probably too much for him.