Hello I am new to the forums here. I just set up my 55gal tank about 1 week ago. It was owned by a woman I worked with who had changed to a bigger tank and went to saltwater. Anyway I tested my water last night and my ammonia was at 2.0 I then changed 75% water, the reading went to .25 my nitrates were at 0 and nitrites at 0 I use an emperor 400 for filter and have 15 small fish in the tank. I use aquasafe, easybalance, and stress-zyme in the water will this be filtered out by the carbon or will it still be effective. I use 2 on the carbon media that goes in the filter and 2 with poly-fil to clean the water along with the bio-wheels. Fish in the tank include 2 dwarf goroumis (i think i spelled right) 2 red fin shark 6 serpea tetras 2 strawberry tetras 2 gold tetras and 1 sucker fish pleco. Is this alright to cycle the tank and how often should I check the water