In slow cooker, combine lentils, carrots, onion, ginger, garlic, turmeric, smoked paprika, salt, and pepper; pour in water and broth.
1 large yellow onion, 2 cloves garlic, 2 tablespoon fresh ginger, ½ teaspoon ground turmeric, ½ teaspoon smoked paprika, 1 lb carrots, 1 cup red lentils, ½ teaspoon salt, 4 cups water, 2 cups vegetable broth, ¼ teaspoon pepper