Live sand may bring stuff but it shouldn’t be too bad. I’ve never added stuff for corals and all of mine are thriving. Only bad thing are the shrooms which refuse to open (weird considering they are supposed to be one of the least fussy).
Really the biggest advice is avoid petco. Nothing good comes from petco (ask me how I know).
Really the biggest advice is avoid petco. Nothing good comes from petco (ask me how I know).