Good for you Madysmom! Brine will be the last choice for your mandarin but along with a good pod population, it may be ok. They eat tiny live pods continually, until lights are out so if there is any way you could supply more to your tank it would be good. I waited a year or more before I put a mandarin in. Just the other day I realized that I had not seen it and later saw it being consumed by a bristleworm. It only survived 5 years. Thought they lived longer. Beth on the forum suggested it had died and that the worm had not killed it. I am sure she is right. That is the bristleworms job. Good luck with yours.