Cocktail Meatballs

2 cups ketchup
2 cups grape juice
2 cups apple jelly
2 cups tomato sauce
5lbs frozen meatballs

Put all ingredients in crockpot mix together and cook on low for 1 hour. Add meatballs and cook on low 4-5 hours. (Pending how your crockpot cooks I'd check on them after about 3 hours. Mine seems to cook faster and then I place them on warm)