Thursday, August 25, 2016

The Fishless Cycle, Part II

Marimo moss balls added (8/13)


        The second half of my cycle was a bit more relaxed than the first half as I figured I was in for a long wait for the all the nitrites to convert to nitrates.
During the second week of the cycle, for the most part, I continued to test for nitrites and nothing else because I knew ~2 ppm ammonia was being converted to nitrites and I knew there were nitrates present, so really I was just waiting for the drop off in nitrites.



Tested 8/14/16 8/15/16 8/16/16 8/17/16 8/18/16 8/19/16 8/20/16
did not test
PH n/a n/a n/a n/a 8.3 8.3
Ammonia 0 ppm 0 ppm n/a n/a 0 ppm 0 ppm
Nitrite 5 ppm 5 ppm 5 ppm 5 ppm 5 ppm 0 ppm
Nitrate 20 ppm n/a n/a n/a 80 ppm 40 ppm
Action dosed with 5 drops dosed with 5 drops dosed with 5 drops dosed with 5 drops partial water change
dosed with 5 drops
dosed with 5 drops

On the 18th, I performed a partial water change late in the day and dosed with ammonia before bed. I did not test the next day as I had dosed so late the day before, I knew my results would still show some ammonia. It was very surprising to find, when I finally tested early in the morning of the 20th, that just two weeks after I started the cycle, it appeared to be completed. The partial water change, it seems, jump started the cycle and got things moving a little faster.


To test that the tank had truly cycled, I dosed with ammonia after performing partial water changes, then checked the levels 24 hours later. Here's what I found:



Tested 8/21/16 8/22/16 8/23/16 8/24/16 8/24/16
after water change
PH 8.3 8.3 8.3 8.3 n/a
Ammonia 0 ppm 0 ppm 0 ppm 0 ppm 0 ppm
Nitrite 0 ppm 0 ppm 0 ppm 0 ppm 0 ppm
Nitrate 80 ppm 80 ppm 40 ppm 20 ppm 5 ppm
Action dosed with 6 drops partial water change
dosed with 7 drops
partial water change
dosed with 3 drops
major water change betta time :)


After watching the nitrite test tube turn purple instantly for so many days in a row, seeing it stay sky blue seemed almost magical, and with my nitrates finally below 20 ppm, it was time to consider finally adding a fish to the tank!


The final arrangement. Driftwood and anubias coffeefolia added 8/15