All the leaves are brown...
Colin Dunlop on dried leaf litter in the aquarium, a practice he took up after asking a dealer about a single brown leaf lying in one of their tanks.
Results for “concentric”
The article archive, searched in full.
Cycling an Aquarium
Mark G N Ferguson breaks down the process every new aquarium depends on — where the ammonia comes from, where the bacteria come from, and how to get them established.
European killifishes part 1: the genus Aphanius in Spain
Matt Ford introduces the Aphanius killifishes of Spain: Eurasian, attractive, seldom discussed, and a long way from the African and American species that define the group.
For Peat’s Sake...
Matt Ford argues the hobby should stop using peat — a valuable, non-renewable resource whose extraction is visible from orbit.
The HMF - What's That?
Rüdiger Rautenberg on the Hamburger Mattenfilter — cheap, widely loved by German breeders, and barely known outside mainland Europe.