Nitrite readings not making sense (fishless cycle)
I was doing 50% water changes every day about a week ago, and about 5 days ago I bumped it up to 75% water changes every day because every time I test nitrites it is off the chart.
My ammonia goes down to 0 ppm every day, then I do the water change and dose it back up to 1 ppm. Before the water change nitrites are always >5 ppm. After the water change the nitrites are usually around 2-5 ppm.
Where are all these nitrites coming from? I am not adding that much ammonia, but every day 1 ppm of ammonia gets converted to off the chart nitrites. Then I do a 75% water change and often even that doesn't get nitrites to a readable level.
On top of it, and this is where I'm starting to feel crazy, I just did my daily water change and nitrites looked like they were 0.5 ppm after letting the tank run for a half hour or so. I dosed 1 ppm of ammonia and took readings an hour later. Ammonia is at 1 ppm, but now the nitrite test is looking much darker, like 2 ppm dark once again. I did a 50/50 tap water/tank water test and it shows about 1 ppm so I do indeed have 2 ppm of nitrites still. I tested my tap water and it is 0. What is going on here?
When I ask around people say to keep doing water changes but every other fishless cycle log I read, no one seems to have to do this. I have not read one log where someone does a 75% water change every day. Somehow everyone else just keeps adding ammonia to like 4 ppm and their nitrites aren't at astronomical levels, and they don't have to spend 2 hours every night doing a massive water change.
I'm willing to be patient I just want to make sure I am not actually hindering the tank with my actions.
Last edited by GrumpyGills; 08-11-2014 at 05:08 AM.