I have four 2-3" RBP in my long 55 gallon tank and was wondering what the staples of their diet should be, currently they are eating jumbo freeze dried krill, raw shrimp(no iodine, deshelled) and beef heart. after doing some research i found that these along with pellets should be theri diet but in what amounts, how often should i feed these items or is their something that i am missing that i should be giving them?