Hi guys, I am in the process of doing a fishless cycle on my 125 gallon tank. I started it on Tuesday May 29 th. I filled my tank, dechlorinated, hooked up heaters, bubbler, filters (Penguin 350 and Whisper 60) cranked the heat to 83 and added my ammonia to 4 PPM. I also took a filter cartridge from an established tank and put it behind the cartridge in my Penguin 350. In addition I had a sponge filter that had been running in the established tank as well and placed it in the tank not running. Test results are as follows
Tuesday May 29
4 ppm Ammonia
0 ppm Nitrite
0 ppm Nitrate
Wednesday May 30
4 ppm ammonia
0 ppm Nitrite
0 ppm Nitrate
Today (Thursday) I decided to turn the sponge filter on, I thought it would spread the good bacteria around the tank a bit faster. I turned it on gave the tank its dose of ammonia, and went about my business. About an hour later I came back and decided to test my parameters.
4 ppm Ammonia
0.25 ppm Nitrite
40 ppm Nitrate
I was confused and thought I must have messed up the testing. I tested everything again to include PH this time and got the exact same readings. Here is picture proof.
Is this just because of me turning on the sponge? I can't believe that I would get Nitrates that quick and so much of it. Should I just let it be for now?