Live Rock Filtration - Denitrification in Live Rock

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Here's an excellent article from It covers the much debated topic of how much or little denitrification (turning nitrate into nitrogen gas, completing the nitrogen cycle) happens within live rock, and explains that without being packed with the many varieties of worms, etc within the rock, pumping water through it's porous structure, denitrification is unlikely.

It highlights the importance of live rock being "alive", and kept alive, treated as you'd treat any other animal, as it's packed with them.

People have a tendency to consider live rock just a strange name for this weird crumbly rock, and it gets left round in boxes and becomes reef bones without the person realising they've just killed it, diminished it's value and ruined it's effectiveness at denitrification.

towards the running costs of ReefBase