Im going into my 3rd week of cycling my tank. the tank is being cycled with a 3 inch Jack Dempsey and a 4 inch Red Devil. I just became aware of the compatability issues associated with the red devil but the red devil and the jd actually get along great so far, no trouble at all. Also, i didnt really learn the benefits of fishless cycling till after everything was going up so... here i am. I noticed about last week that my ammonia lvls were going up rapidly, so I did about a 50% water change and things leveled out. Im going into my 3rd week, im having to do 40-60% water changes every 2 days so the ammonia lvls stay safe. my problem is im not seeing a rise in the nitrites. Nitrites are currently at 0.3ppm atm. It is my understanding that im suppose to see a spike in nitrites and ammonia, then they go down to nothing and i start seeing nitrates. Is this correct? Im wanting to know if its normal for the nitrites to take this long to go up and also if this amount every 2 days for a water change is normal for this situation. Will my tank ever cycle at this rate? Any help would be greatly appreciated. THANK YOU!