I just realized I can put him in the sump!I have a 10 gallon QT i use for coral but I didn't feel right quarantining a fish of his size in it. There is a local shop that has live brine on and off, last time I was there they were all out but I can try again tomorrow. I do have a completely empty 55 I could use in a pinch, but its bone dry with no rock or sand (or water...). I think these options would probably stress him more?