Welcome. Just don't buy all the stuff the 'local fish store' guy tries to sell you, and you'll do fine.
In this hobby, EVERYTHING is dependent on stability. If something starts to die, don't try to 'fix' the tank overnight. Oh, and don't buy and put just any kind of coral into the tank, a lot of things are pests, and you will regret it later (I remember being sold a coral with a "BONUS ANEMONE" on it by one lovely past member of the community. I still have those "bonus" anemones show up in my tank 15 years later). Not all fish stores are like this, but they are out there. If they want to sell you a fix, just avoid.
Pests:
ANY AND ALL PALYS, YES ALL OF THEM
GREEN STAR POLYPS
AIPTASIA (also sometimes known as 'bonus anemones')
Most crabs
Most starfish
Most montipora
Leather coral
damselfish (just say no to damsels)
Get your tank set up early with a good skimmer, and a reactor running GFO. You won't have to swap media right away, and you may think it's doing nothing, but that means it's working. It's the countermeasures to 'old tank syndrome' and Hair Algae.
Best of luck. Ask here because we DO NOT accept any kind of outside influence on our opinions. We just want you to succeed.
