Hey new to this site. Sorry For posting my question on other threads. Had my 55 gal peacock tank up for four weeks before adding any fish. Water priameters were fine. Water temp is 78 degrees have a ph of 8.0. Had no nitrates, ammonia,or nitrites. Seven days ago had a slight spike in ammonia,nitrates and nitrites. Started the tank with cichlid chemistry,cycle and prime.I run a marine land bio wheel backpack filter, and undergravel filter with power head. I have ten peacock cichlids. Still can not get levels to drop. I have marble slate forming rock formations one piece of african drift wood and four fake plants. Any ideas? And thank you everyone for your input