The four pillars of axolotl care
- Tank — 20-gallon long minimum, 40-gallon breeder recommended, bare bottom or fine sand only
- Water — 60-68°F, properly cycled, weekly 20-25% changes
- Food — sinking pellets + earthworms 2-3 times per week for adults
- Routine — daily observation, weekly testing, monthly filter maintenance
Pillar 1: Tank requirements
The tank is your axolotl's entire world for 15 years. Get it right once and you're set.
- Size: 20 gallons long minimum (30" × 12" × 12"). 40-gallon breeder for an ideal adult tank.
- Shape: LONG, not tall. Axolotls walk along the bottom rather than swim up and down.
- Substrate: Bare bottom or fine sand under 1mm grain size. NEVER gravel — causes fatal impaction.
- Lid: Glass aquarium lid. Axolotls jump.
- Hides: At least one cave or ceramic hide for stress reduction.
- Lighting: Dim. Axolotls don't have eyelids and don't like bright light.
For more on tank size specifically, see what size tank does an axolotl need.
Pillar 2: Water parameters
Water is the single most important variable in axolotl care.
| Parameter | Target | Why it matters |
|---|---|---|
| Temperature | 60-68°F | Axolotl metabolism needs cold. Above 72°F is dangerous. |
| pH | 7.4-7.6 | Stable matters more than perfect. |
| Ammonia | 0 ppm | Anything above 0 burns gills chemically. |
| Nitrite | 0 ppm | Toxic to axolotls. |
| Nitrate | Under 20 ppm | Up to 40 ppm tolerable, above 80 ppm harmful. |
| Chlorine | 0 ppm | Always treat tap water with Seachem Prime. |
For the complete water parameter breakdown, see the water parameters cheat sheet.
Pillar 3: Feeding
Feeding schedule by age:
- Juvenile under 5 inches: Once or twice daily
- Sub-adult 5-8 inches: Every other day
- Adult 8+ inches: 2-3 times per week
What to feed:
- Staple: Sinking pellets (Hikari is the standard)
- Treat: Earthworms (Canadian nightcrawlers, cut to size for juveniles)
- Occasional: Live blackworms, frozen bloodworms
- Never: Live fish, shellfish, anything from the wild
For the complete food safety database, see can axolotls eat...? and the feeding schedule guide.
Pillar 4: Routine maintenance
Daily (2 minutes)
- Glance at temperature
- Observe axolotl for unusual behavior
- Remove any uneaten food (15-20 min after feeding)
Weekly (30 minutes)
- 20-25% water change with dechlorinated, temperature-matched water
- Test ammonia, nitrite, nitrate, pH
- Spot-clean substrate with a siphon
Monthly (15 minutes)
- Rinse filter sponge in OLD tank water (never tap water — kills bacteria)
- Check air pump and tubing
- Top off evaporation
As needed
- Replace dechlorinator (Seachem Prime lasts 6-12 months per bottle)
- Replace test kit reagents (every 18-24 months)
- Add aquarium fan or ice packs during summer heat
Common axolotl care mistakes
- Buying the axolotl before the tank cycles — kills more axolotls than any other mistake. Cycle for 4-6 weeks first.
- Using gravel substrate — axolotls inhale food and substrate together. Gravel causes fatal impaction.
- Adding tankmates — fish nip gills, shrimp get eaten, other axolotls bite each other.
- Letting water get warm — anything above 72°F is chronic stress.
- Overfeeding — adult axolotls eat way less than people assume. 2-3 meals a week is enough.
- Skipping water changes — nitrate accumulates. Weekly 20-25% changes are non-negotiable.
Axolotl care by age
Juvenile (1-6 months, under 5 inches)
Daily feeding, slightly warmer water (66-68°F) to encourage growth, more frequent observation. Juveniles are sensitive to parameter shifts but grow fast.
Sub-adult (6-12 months, 5-8 inches)
Every-other-day feeding, target water temperature (62-65°F), introduce variety in diet. Most axolotls reach sexual maturity around 12 months.
Adult (12+ months, 8-12 inches)
Twice-weekly feeding, stable parameters, routine maintenance. The "easy" phase if everything else is set up correctly.
Senior (10+ years)
Slightly reduced feeding, watch for slowing metabolism and slight body changes. Axolotls can show their age gradually with reduced activity.
Health watch: signs of problems
Watch for these warning signs:
- Gills curling forward or looking stringy = water quality problem
- Floating tail-up = trapped gas, possibly overfeeding
- White patches on body or gills = fungal infection
- Refusing food = check water temperature and parameters
- Lethargy and pale color = water quality or stress
For details on specific health issues, see why is my axolotl floating.
Frequently asked about axolotl care
How do you take care of an axolotl?
Axolotl care has four pillars: a 20+ gallon long tank, cool water (60-68°F), weekly 20-25% water changes, and food two to three times per week. Cycle the tank before the axolotl arrives (4-6 weeks). Don't add tankmates. Don't use gravel substrate.
Is an axolotl easy to take care of?
Medium difficulty. The first month (cycling and setup) is the hardest. After that, daily care is just feeding and weekly water changes. Easier than reef tanks, harder than goldfish. Most axolotl deaths trace back to first-month setup mistakes.
What do you need to take care of an axolotl?
Minimum needs: 20-gallon long tank, sponge filter + air pump, glass lid, water conditioner, water test kit, digital thermometer, sinking pellets, hide/cave, feeding tongs. Total cost: $250-$300 for the bare-minimum setup.
How often do you need to clean an axolotl tank?
Weekly 20-25% water change with dechlorinated water. Monthly: rinse the filter sponge in OLD tank water (never tap water). Never do full tank cleanouts — they crash the bacterial cycle.
Can axolotls be kept as pets for beginners?
Yes, but plan for a steep first-month learning curve. The cycling process is the hard part. After that, axolotl care is straightforward. The biggest beginner mistakes are: buying the axolotl before the tank cycles, warm water temperatures, and gravel substrate.
Ready to start? The start here walkthrough gives you the first-month timeline from purchase to settled-in. The shop page has the gear list. The tank setup guide covers cycling.