I voted to tear it down. The reason being is that fallow periods have not worked for me. Some sort of parasite, that I think is marine ich, is entrenched in my tank and fallow periods didn't work in my case. I just lost another angel and now I'm in the middle of another outbreak that is impacting most of my fish in my 100 gallon reef. After 20 years, I can honestly say I am pretty much done with this hobby. It does not bring me joy, and that is what hobbies should do. There is no joy in watching your fish scratch miserably on the rocks, and having quarantine tanks sitting all over the house (especially if they were useless in my case). I'm sorry to sound negative, but I'm really jaded. Life is too short to invest time and money in something that is futile. Good luck.