got a 55 gal. 9 months old. put a new bubble tipped anomone and a toadstool leather in 3 days ago along with a galaxea and noticed i have about 0.25 nitrites. does this mean mini cycle or what. did a 25% water change and no change. very little ammonia about 0.05 and nitrates are about 7 ppm. calcium is about 450 to 500. what else can i do. corals and inverts look fine so far. fish seem to be doing well also.