Slow Cooker Crawfish Jambalaya

1 pound crawfish tails,cleaned --1 can cream of mushroom soup--1 large onion, chopped--5 cloves garlic,chopped--1/2 jalapeno pepper--1/2 green bell pepper--1/2 red bell pepper--4-ribs celery--1 soup can raw rice --2 soup cans water--1 teaspoon each salt and red pepper--Parsley and Onion tops for garnish ---Special untensil: West Bend Slow Cooker. Spray Slow Cooker with Pam. Layer vegetables. Add cream of mushroom soup, water, raw rice, crawfish tails and seasonings. Mix throughly. Cook covered 1 1/2 hours. Add parsley and onion tops. Add more seasonings if necessary.  Serve