I agree with SUNDOG. How much does a spotted grouper cost? Are you willing to take a chance on killing a large beautiful fish like that. Green Chromis,or Damsels are a lot less of an investment,about five dollars each,to loose. Alot of times(not always) the ammonia,and nitrite levals reach toxic levals during the cycle,and your fish will die.Patience is the key here.If you really want a grouper,please wait,for the fishes sake,till the tank is cycled. I once read someone say" in salt water BAD things happen quickly, GOOD things take time" STEVE