Hi all, Hmm, I started a new marine tank last friday, this is my 2nd tank, this is the 4th day of the new tank, I added salt last friday, then I added LS on saturday after ensuring that the gravity is correct. On saturday night, my ammonia alert turns green, means there is ammonia presence, but not at peak. On sunday, I poured in the specific amount of "Fritz Zyme #9", but why there is still ammonia presence on the 4th day? I asked a lot of people, and they said they don't have ammonia presence so fast, is there some thing wrong with my tank? Should I buy LR to let it cycle? Or I should "not" buy LR now? BTW after adding the Fritz Zyme #9, the wool in my filter have some thing like brown brown on it, it could'nt be anything else but bacteria, is it good for them to be there? Are they got stuck there and because of that they could not reduce ammonia level?