Hey everybody,
After 4 years of fish keeping, I am still confused with how the nitrogen cycle works. Can somebody explain it for me? Also, I do not really know the other more niche chemicals in fish keeping such as TDS and other metals and stuff. Can somebody explain these things for me as well? I find that this will be very helpful for my future fish keeping experience. (another reason why I'm asking this is because I am trying out for the Science Olympiad Environmental Chemistry competition and the specific topic this year is freshwater chemistry, so I find the members here to be a good source of information, because I cannot find information on the olympiad website)
I know some of you only look at threads with a picture so I'll post one:

After 4 years of fish keeping, I am still confused with how the nitrogen cycle works. Can somebody explain it for me? Also, I do not really know the other more niche chemicals in fish keeping such as TDS and other metals and stuff. Can somebody explain these things for me as well? I find that this will be very helpful for my future fish keeping experience. (another reason why I'm asking this is because I am trying out for the Science Olympiad Environmental Chemistry competition and the specific topic this year is freshwater chemistry, so I find the members here to be a good source of information, because I cannot find information on the olympiad website)
I know some of you only look at threads with a picture so I'll post one:
