Articles tagged: DOC
- Basics
Water Changes — Why You Change Water
What accumulates and depletes in a closed reef system, why regular water changes are the most reliable maintenance tool, and what they cannot replace.
- Basics
Activated carbon — principles, selection and use
Activated carbon's adsorption principle, quality differences, reactor sizing, replacement intervals and risks — when to use it and when to leave it out.
- Basics
Protein skimmer — principles, selection and use
The physics of foam fractionation, sizing principles, skimmate interpretation, CO₂ scrubber and pH connection, and the most common adjustment mistakes.
- Practice
Dissolved organic carbon (DOC) — the invisible parameter that explains tank health
What DOC is, how SAC254 measures it, why refractory fractions accumulate in closed systems, and how ozonation, activated carbon and skimming affect DOC cycling.
- Practice
Ozonation in the reef aquarium
Ozone chemistry, ORP control, equipment, trace element interactions with iodine and bromine, safety protocol and the connection to DOC dynamics.
- Deep dive
Refugium — microfauna, trace element chemistry and biological balance
Copepod ecology under predation pressure, macroalgae trace element mechanisms, DOC dynamics, the refugium's role in competitive ecology and the microbial loop.
- Practice
Carbon dosing in practice — when, how, and when not to
When carbon dosing is justified, comparison of carbon sources, the Tropic Marin product family by PO₄ level, dosing, risks and how to prepare for them.
- Deep dive
Carbon dosing — biochemistry, the microbiome and open questions
Two distinct biological mechanisms, DOC's effect on microbiome composition, biopellets and PHB, and the questions science cannot yet answer.
- Practice
The microbiome as the tank's foundation
What the microbiome is, what it does, how DOC and oxygen drive microbial balance — and why the hobbyist's daily choices affect it more than most realise.