🏠The Axolotl tank: 90 L, hardware and start-up

Axolotl : A tank of at least 80 to 100 L per adult, long rather than tall, with fine sand or a bare bottom and the filter output diffused by a spray bar. No cohabitation with fish, which nip its gills or end up swallowed.

In short: 20 to 30 cm as an adult, 80 to 100 L minimum per individual, cool water between 15 and 20 °C. A placid, curious neotenic amphibian, to be kept alone or among axolotls, never with fish that nip its gills. A cold-water animal kept below 22 °C on very fine, non-ingestible sand: swallowed gravel and summer heat are its two deadly dangers.

90 litres minimum: why that number

For a Axolotl reaching 25 cm as an adult, plan 90 real litres — and remember a big tank is more STABLE, hence easier, than a small one: parameters drift slowly, leaving time to correct. This volume suits a sturdy standard cabinet — just verify perfect levelness.

Hardware: filter, heater, lighting

A filter turning the volume over three to five times an hour, no heater needed for this temperate species (15 to 20°C) — a simple thermometer checks stability, and lighting on a timer at 8 to 10 hours a day: any longer and the algae win.

Substrate, plants and start-up

A fine-sand substrate is mandatory for the Axolotl, a constant sifter — gravel wounds barbels and skin. robust plants (anubias, vallisneria, Java moss) and wood to structure the territory. Then patience: a complete nitrogen cycle (3 to 4 weeks, nitrites back to zero) before the first Axolotl — the step every hurried beginner pays for dearly.

Frequently asked questions

What tank size for a Axolotl?

A real 90 litres minimum — below that, parameters drift too fast to catch.

Does a Axolotl need a heater?

No: it is a temperate-water species (15 to 20°C) — heating is actually contraindicated. In summer, cooling is the real question.

The guides that apply to you

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