I don't have a front load washer...maybe someday
We use Charlie's Soap on our BumGenius diapers. Cold wash with 1/8 cup of soap powder, Hot wash with 1/8 cup of soap powder, extra rinse and then dry on low. I also add bleach to the hot wash about once per month.
My general understanding of washing cloth is to avoid any detergents with additives and softeners as they add a residue on the diapers that make them less absorbant.
Good Luck and welcome to cloth diapering