NO₃, NO₂, NH₄ — the nitrogen cycle in plain language
The chemistry of how fish waste becomes plant fertiliser, why the order matters, and what "the tank is cycled" actually means under the hood.
Every aquarium book starts with the nitrogen cycle, and then either gives you the chemistry without the why, or the why without the chemistry. This is an attempt at both, in the language Manfred actually uses when explaining it to someone holding a test kit.
Three numbers, two bacteria families, one direction. Ammonium becomes nitrite becomes nitrate. Each step has its own bacteria, its own timeline to establish, and its own failure modes when something disrupts it.
Full prose coming soon. The NO₃, NO₂, and NH₄ reference pages cover each parameter individually.
