So I started a fishless cycle on January 11 and I have been able to covert 4ppm of ammonia to Nitrates in 24 hrs. My tank is 30 gallon and planted. My Ph is holding at 7.6 but my nitrites are sky high. I have been doing a few 90% water changes (down to the sand) and the nitrites will get lower but then climb again. Is this normal? Am I just waiting for the nitrite eating bacteria to grow? If so, should I continue to feed the tank ammonia like I have been doing?