Reeftopia is Turbo snails, blue leg crabs, astrea for clean up crew. Blue legs are pretty useful...Turbo s and astrea have low life expectancies.... I'm wanting dove snails (also called nano conch) and Cerith both are known to HAVE bred in tanks.... So, I was leaning toward; https://www.reefcleaners.org/aquarium-store/quick-crew-w-hermits-120-highBut on group orders shipping can be expensive... Probably if individual with no express shipping it's cheaper to go solo.