I believe that I somehow crashed my cycle. I just went thru 4 or 5 days of high ammonia levels, and I did 50 percent water changes everyday and used fritz complete (this is in my 75 gallon south american cichlid tank), and this morning when i tested the water, my ammonia levels have gone down (not 100%), but not nitrites are high - which doesnt surprise me with having high ammonia for days. Three questions.
1. Does this sound like the tank crashed its cycle and has started again?
2. I am doing 50% water changes every 24 hours (in the evening), I did just add more fritz complete this morning because of the high nitrites. Can I still wait to do a water change this evening? Will by adding the fritz complete get the fish thru the day? I have 2 bubble stones in the tank to help my fish with oxygen
3. When you clean your filter media, should i leave one of the sponges dirty? I usually clean all the sponges in tank water. Not sure if this could cause the cycle to crash.
Thank you for your help