Follow up , I will also make a separate post: does the smell ever go away? I literally started the entire tank over in the last 4-5 hours. No matter what I did the tank was literally striped to just glass and plastic filter chanber, 100% new live sand and Water. The live rock smelled horrific , the plastic filter chamber was nauseating... tried everything I could use that was safe... seachem coral dip, hydrogen peroxide , fish tank glass cleaner , near bowling water and aquatic safe soap. Nothing even made a dent! Do I need to have the tank it self replaced? It’s a Fluval evo 13.5, pretty sure they sell the glass only replacement. Maybe it’s a good time to upgrade!