Starting an aquarium
From your first tank to a mature biotope: equipment, the nitrogen cycle, stocking.
Guide20 gallon long aquarium setup: fish, plants, equipment — complete guide
The long 76 L aquarium is the gold standard for a second tank: more horizontal swimming space, fits 30–40 fish. Specific equipment list and three working stocking plans.
Guide10 gallon aquarium setup under $150: a complete starter kit
A real equipment list with prices, step-by-step setup, stocking ideas. The most popular beginner tank size with a concrete budget.
GuideYour first aquarium: a step-by-step beginner's guide
From choosing tank size to adding your first fish: what to do, in the right order, without losses.
GuideThe nitrogen cycle in aquariums: cycling without losses
What happens in the filter during the first 4 weeks, and why you must not add fish sooner.
GuideWhat aquarium size for a beginner
A small tank is harder than a big one. Here's why 100 L is the reasonable minimum.
GuideAquarium substrate: sand, gravel, or aquasoil
Substrate choice shapes plant root health, water clarity, and the wellbeing of bottom-dwelling fish. We break down the three options.