I am new to fish keeping (I won't count a betta I had in a 1 gal pickle jar with a peace lily for 2 1/2 years as experience because I think I did everything wrong there!) and just bought a 20 gal high fish tank for my kids for Christmas. I have a ton of learning to do in the next few weeks! I have a scientific background so I understand the nitrogen cycle and it's importance to healthy fish 🙂