New too the salty side of things, I’ve been doing freshwater off and on since I was 8 years old. I got my tank all set up and I’m in the stage of adding coral, fish. All that good stuff, I got a 30 gallon tank right now but I am getting a 120 gallon tank soon and I’m wanting this 30 gallon tank too be a quarantine tank: grow out tank maybe. I was at the fish store today buying some coral and an experienced reefer told me too avoid this coral, It got me thinking. So for those of you who have been doing this for some time what’s some knowledge that’s not talked about a lot too new people starting out, fish too avoid, corals too avoid etc. it can be anything, just things you wish you knew as a beginner. Thank you for your advice and time