Question 1

What are safe water parameters for an axolotl?

Accepted Answer

Ammonia 0 ppm, nitrite 0 ppm, nitrate under 20 ppm (lower is better), pH 7.0–8.0, and temperature 16–18°C (60–64°F). GH is best kept above 8 dGH and KH around 3–8 dKH for a stable pH.

Question 2

My ammonia or nitrite is above zero — what does that mean?

Accepted Answer

Any ammonia or nitrite above 0 is harmful and usually means the tank is not fully cycled. Do a large dechlorinated water change now, and if it stays above 0, tub your axolotl in clean cool dechlorinated water with 100% daily changes until the tank reads 0.

Question 3

Does this tool diagnose a sick axolotl?

Accepted Answer

No. It interprets your water test, not your animal. If your axolotl looks unwell — curled gills, not eating, fungus, red or damaged skin — check a warning-signs guide and contact an exotics vet. When in doubt, a vet call is never wrong.

Question 4

Should I tub my axolotl while the tank is still cycling?

Accepted Answer

Yes — if ammonia or nitrite reads above 0, tub your axolotl in a clean container of cool, dechlorinated water and do 100% water changes daily until the tank finishes cycling and reads 0. It keeps your axolotl out of toxic water while the tank catches up.

Question 5

What water temperature do aquatic amphibians need?

Accepted Answer

It depends on the animal. Cold-water species — axolotls and most newts — want 16–18°C (60–64°F) and are endangered by heat above about 22°C. Tropical species live on a heater: roughly 22–28°C (72–82°F) for African dwarf frogs, Budgett’s frogs and Surinam toads, and 26–30°C (79–86°F) for the aquatic caecilian, while African clawed frogs sit cooler at 18–24°C (65–75°F). Whatever you keep, know its safe band and its danger threshold (see the table below).

Parameter	Safe target	Why it matters
Ammonia (NH₃/NH₄⁺)	0 ppm	Ammonia irritates and damages skin and gills. In a healthy, cycled tank it should always read 0.
Nitrite (NO₂)	0 ppm	Nitrite is toxic — it cuts the blood’s ability to deliver oxygen. Should always be 0.
Nitrate (NO₃)	under 20 ppm (under 10 is ideal; never let it pass 40)	The end-product of the cycle. Far less toxic than ammonia or nitrite, but vets prefer it under 10 ppm for axolotls — prolonged high nitrate is linked to eye problems (bulging or cloudy eyes). Regular water changes keep it down.
pH	6.5–8.0 (7.4–7.6 is ideal; avoid sudden swings)	For axolotls, pH 6.5–8.0 is tolerated and about 7.4–7.6 is ideal. Higher pH makes any ammonia more toxic, and a falling pH usually means the KH buffer is running out, which can crash the biofilter. Keep it steady.
Temperature	16–18°C / 60–64°F for axolotls — other animals: see the next table	Axolotls are cold-water animals. Heat stress brings appetite loss and infections, and sustained high temperatures can kill.
General hardness (GH)	about 7–14 dGH (avoid very soft or distilled water)	Axolotls need reasonably hard water — very soft or distilled water undermines the skin, their main defence against infection. Vet care sheets give about 7–14 dGH.
Carbonate hardness (KH)	at least 3 dKH (3–8 is a common target)	KH buffers pH. Low KH lets pH swing — which can crash your cycle.

Animal	Ideal temperature	Gets dangerous at
Axolotl	16–18°C (61–64°F)	22°C (72°F) and up
Aquatic newt	15–20°C (59–68°F)	23°C (73°F) and up
Mudpuppy	10–20°C (50–68°F)	25°C (77°F) and up
Amphiuma	16–22°C (61–72°F)	27°C (81°F) and up
Siren	18–26°C (64–79°F)	30°C (86°F) and up
Paddletail newt	15–20°C (59–68°F)	24°C (75°F) and up
Spanish ribbed newt	15–21°C (59–70°F)	24°C (75°F) and up
African dwarf frog	22–26°C (72–79°F)	30°C (86°F) and up
African clawed frog	18–24°C (64–75°F)	28°C (82°F) and up
Budgett's frog	24–28°C (75–82°F)	31°C (88°F) and up
Surinam toad	24–28°C (75–82°F)	31°C (88°F) and up
Aquatic caecilian	26–30°C (79–86°F)	32°C (90°F) and up

Water Interpreter

Safe water parameters at a glance

Ideal temperature by animal

Water Interpreter

Safe water parameters at a glance

Ideal temperature by animal

Never guess at your water again