You will save a ton of money if you buy used.This is ONE HELL OF AN EXPENSIVE HOBBY.Don't forget to think about losses.Yes there is always something that might die fish coral clams.Due to stupidity misfortune or a mistake.Some fish or corals die for reasons unknown.The corals are what will cost you a smalll fortune.If you can buy frags.Small and cheap.They will grow and you will enjoy watching them grow.If you can find someone who has given up on the hobby its one way to get stuff cheap.I find its addictive and the spending never ends.Bigger and better is always nice.I have a 150 and now I am thinking of a 300gal.