Wanting to start the cycle of my 75g tank, already have 80lbs of live sand and 20lbs of LR(will be buy another 50lbs along with the fish) and was wondering what fish to buy if I want to start a Reef tank with peaceful fish mates. I was told Damsels are very good but heard can be aggressive towards fish, but if not i was looking at yellow tailed blue damsels, Javanese Damsel or green chromis but dont really like the look of the green chromis. Any other cool looking fish that are decently cheap and are very hardy?