When do gills grow back

[Day]

Hi, this is the current state of my axolotl after a terrible Nitrate spike. A few days ago we moved her from a 36 gallon to a 20 gallon, with brand new fresh water using API quick start and Prime.
Levels are now: pH 7.6, nitrite 0, ammonia 0, and nitrate 5.0pmm.
Previously they were pH 7.8, nitrate 160pmm, ammonia 0 and nitrite 0.

** It was recommended by a few axolotl owners that I should add almond leaves to the tank. I made homemade extract instead and only put 16 mls of it in the tank. I got mixed instructions on either putting 1 oz per gallon or put 1 teaspoon per 20 gallons. So I need help on the amount I should put in there

Put since the levels are fine, I’m assuming it just takes time her gills to grow back?

 

[wolfen]

what is your kh gh?
use 50% holtfreters in the tank water, if she has been subjected to high nitrate levels then she will require methyline blue baths to reverse the toxicoses.

 

[Day]

what is your kh gh?
use 50% holtfreters in the tank water, if she has been subjected to high nitrate levels then she will require methyline blue baths to reverse the toxicoses.

I’m not sure since I thought those tests were only for aquariums with plants, which mines have none of.
This doesn’t quite answer my question though of when gills usually grow back.

 

[wolfen]

the reason for methyline blue is because high nitrites and high nitrates affect the blood.
50% holtfreters makes the water more comfortable and will help prevent fungus, this is to give optimum conditions for gill growth.
it takes a few months for the gills to fully grow back, although because of gill damage it isn't unusual for them to grow back abnormally ie.. sporadic, split/antler looking.