Troubleshooting
Setting Up a New Filter Without Crashing the Cycle
Swapping a filter throws away your bacteria unless you plan for it. The overlap method, what to move across, and how to watch the first fortnight.
Why Your Aquarium Is Cloudy — Five Causes and What Each One Means
Cloudy water is a symptom, not a diagnosis. The colour of the haze, when it appeared and what you changed last week narrow it down to one of five causes.
