[Susan]

Hi, have a look at “Sport Dog, Elite Series” its similar to Victor & is cheaper… When you click on a formula scroll down & you’ll see when compared to Victor formulas…
I don’t know which Diamond formula your feeding but read the protein%, fiber% & fat% & make sure you look for a kibble that has limited ingredients & is around the same amount of protein fat & fiber & slowly introduce & get him use to a bit more protein etc if its higher then his regular kibble formula, I feed “Taste Of The Wild” Sierra Mountain Roast Lamb to my boy that has IBD & Skin Allergies, he does real well on Taste Of The Wild kibbles.
It’s Summer in Australia & I’ve just introduced Patch to “Holistic Select” Salmon, Anchovy & Sardines, Adult/Puppy grain free formula, I’ve read reviews & a lot of dogs with stomach bowel & skin problems are doing real well on the Holistic Select Salmon, Anchovy & Sardines Adult/Puppy Grain Free formula..
http://www.sportdogfood.com/dog-food/special-diet/grain-free/