🧴Water care for a Axolotl: 15 to 20°C, pH 7 to 7.5

Axolotl : Water must stay below 22 °C at all times: above that, stress and infections set in quickly. Gentle filtration, 20 percent weekly changes and no salt or fish medication on its fragile skin.

🩺 Reminder: this page informs, it does not diagnose. For any symptom or health question, your veterinarian remains the only reference.

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.

The Axolotl’s water: its real parameters

For a Axolotl, water quality comes in numbers: 15 to 20°C on the thermometer, pH within the 7 to 7.5 window, nitrites at zero, nitrates under the 25 mg/L bar. A drop-test kit (NO2, NO3, GH, KH, pH) beats any strip — and the nitrogen cycle, three to four weeks before any fish, is non-negotiable.

Water changes and tank upkeep

10 to 20% of the volume weekly, with water near tank temperature — easy for this temperate species, gentle substrate siphoning — the bottom is the Axolotl’s home zone, respect its landmarks and filter media rinsed in tank water, never under the tap: chlorine sterilises your filter.

Health: what stalks the Axolotl

The Axolotl watch-sheet: intestinal blockage from swallowing fine gravel and heat stress and infections above 22 °C. Before any treatment, the reflex is a water test — pouring medicine into loaded water is treating the fever by breaking the thermometer. Well kept, a Axolotl lives 10 to 15 years.

Frequently asked questions

What water parameters for a Axolotl?

15 to 20°C, pH 7 to 7.5, zero nitrites and nitrates under 25 mg/L — checked with drop tests, not by eye.

How often should a Axolotl tank get water changes?

10 to 20% weekly, water brought to temperature, filter rinsed only in tank water. Consistency beats volume.

The guides that apply to you

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• Using Rainwater for Your Aquarium: Good Idea or Risk to Avoid?

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