Guinea pig Help????<<<<<<<<<<<<<<<?

I feed my guinea pig little bit of apple, half of carrot, 3 branches of cilantro and romaine lettuce daily. Half of the food in the morning and half at night. I also have unlimited hay for her and and lots of cavy performance pellets. I have noticed in the fleece bedding that there are white spots. I tried taking some food out like carrots and apples but he continues on having those white spots. Can somebody give me their diet of what you feed your guinea pig so i can know what to feed him. Tips on how to take care of the guinea pig are welcomed!! THANK YOU!!