Tip of axolotls gills is white?

[KirbyandMudkip11]

Hello! My female axolotls gills have some discoloration at the top (slightly white, no fuzz).
I tested her water params and everything came back normal except ammonia was inbetween 0-0.25 ppm.

Do her gills look weird or am i just freaking out. Should I tub her and maybe dose her with some methylene blue?

 

[wolfen]

how was the tank originally cycled?
how is cleaning performed? ie.. daily fecal matter removal etc..
what chemicals minerals salts are used?
the whitening of the tips can be the start of a fungal infection.

 

[KirbyandMudkip11]

how was the tank originally cycled?
how is cleaning performed? ie.. daily fecal matter removal etc..
what chemicals minerals salts are used?
the whitening of the tips can be the start of a fungal infection.

The tank was quickly set up when I found out my female was not a male (she was housed with my male axo in a 45 gal). I added media from the original tank and the tank has been going for almost a year now.
I do spot cleaning as needed for fecal and stuff and then regular water changes (around 25%)
I use Seachem Prime conditioner to treat the water alone with the Seachem Stability for every water change / top off.

She’s still eating and active.
Water parameters were:
1/8/25 parameters: KIRBY (20 gal)

pH: 7.6 ish

Nitrate: 0 ppm

Nitrite: 0 ppm

Ammonia: 0 ppm - 0.25 ppm

temperature: 64° F

I know Nitrates should be at least 5, but I don’t have any in either of my tanks. I did fully cycle the 45 gal when I set it up in 2021

My ammonia was tested using the API freshwater test and it was very hard to tell if it was 0 or 0.25.
Thank you!

 

[wolfen]

because the tank is spot cleaned having trace ammonia and undetectable nitrates isn't surprising (the trace ammonia will be from hidden/missed waste or late removed were as the amount of waste in the water is so low the nitrates are undetectable)
adding 2g/l non-iodised salt to the water will help protect against any ammonia spikes and help protect against/remove any fungal infections.
reducing tank temperature will reduce the ammonia toxicity (free-ammonia NH3 level at 64°f 0.25ppm TAN NH3 + NH4 is 0.0032ppm, at 59°c the free-ammonia NH3 is 0.0026ppm, both regarded as safe levels).