I was forced to place two small damsels from my 13g. nano cube to my 30 gal reef tank; that has been established for 2 months. Now my amonnia levels have been high (0.25) for almost two weeks. I think i may have overloaded my tank; but, that doesnt seem right because i dont have much in there. I still have some room for atleast 5 or 6 pounds of live rock. Should I put more in?? Will it make my ammonia levels drop?