We have been trying to cycle a 20gal aquarium with fish for a month now and we believe it has stalled, but are unsure what needs to be done now. (Very regrettably, we did not know anything about fishless cycling when we started this adventure.) :(
We have overstocked the tank for cycling, but would do frequent PWCs to keep ammonia below 1.0ppm.
3 Balloon Mollies
5 Neon Tetras
1 Cory Cat
About a week an a half ago, we noticed that our ammonia and nitrites dropped to 0 and our nitrates were 20ppm. Soon after we bought an automatic feeder, preparing to go out of town for Thanksgiving. We didn't test the auto feeder well enough and it over fed our tank one day. The tank was a mess! We immediately did a 25% PWC because our ammonia was 2ppm. Now, the ammonia is at about 2ppm (before our daily 10% PWCs which brings ammonia down to about .75ppm), nitrite seems to be stuck at 0 and nitrate has been 20 for the last week and a half. Also, our tank went from being very cloudy to clear in about a week. We thought it was the water changes, but I am not so sure. I know cloudy water is just apart of the cycle.
We have been testing using the API Freshwater Test Kit.
The fish seem to be alright so far, except our pregnant silver balloon molly. Her coloring and eyes have gotten dark. I am afraid of what will happen when we have to leave for a week!
Thank you in advance!!