Can you help me? My aquarium can not cycle! I bought it on november 5th (almost two months ago). I had amonia spike , then the amonia started going down from 4 to 1, I went trough nitrite spike( I lost two fish during the nitrite spike) and now the nitrite are back to 0 -for more then a week. I test the water every day. The nitrate are at 0 but the amonia is back uo to 4 . So high amonia , no nitrite and nitrate. The ph is very law - 6 - this is the ph of my tap water too. I heart that law ph can kill all benefitiery bacteria. What can I do? I use only stress coat when I do water changes - 2,3 times a week. I forgot to say that my fish tank is 26 gl. Please if you have any idea what is going on with my tank, help me. I read everything about cycling aquarium and I don't understand why is the amonia rising if I already had high nitrites and they went back to 0.