[ati70cutlass]

i recently started sps and have had stellar results. my main sps ( 40 breeder) tank was 4 months old when i started to add. no deaths to date, tank is 9 months old.
i just set up my 180 using my water, live rock , sand, from a 5 year old 120 gallon setup. i did have a small spike in nitrate and ammonia. they have been at 0 for almost a month. i just added 6 chromis this week and all are happy. my chaeto has doubled in size every two weeks since setup. i also used dr tims one and only with great results too. so im wondering after all of this if im ready to put sps in there. should i frag off something and use it as a test subject? would that be the best route. there are zoos and mushrooms already in the tank and they look good. please let me know what everyone thinks