Someone please help, I’m getting so fed up. I’ve been cycling my tank with Dr. Tims ammonia and Seachem Stability. My cycle was progressing well and my ammonia was disappearing after 24 hours for over a week straight, my nitrites were sitting around 2ppm and my nitrates at around 10ppm, then all of the sudden the ammonia stopped disappearing. My ammonia levels rose to 2ppm, nitrites rose to over 5ppm, and my nitrates dropped to 5ppm. Pretty sure my cycle stalled, probably because the nitrites got too high? I did a 90% water change today to bring my nitrites down so my cycle would restart and tested my water after the water change, my ammonia is down to 0.25ppm but my nitrite levels are still high, probably between 2ppm and 5ppm. Why are my levels so high after a 90% water change? Should I do another huge water change? Will my cycle restart? I feel like completely giving up.