I feel hermits are a must, but just my opinion. I have a 72 gal bow front, and I have 30+ hermits, 50+ snails, and 2 peppermint shrimp. I also have 90+ lbs of LR and 60lbs LS. I like to mix the snails like lion_crazz said. If you do go with hermits, make sure you get empty shells for them to...