Nitrites spike in apparently cycled tank

Abyssal Pyre

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Hi everyone,
I have a problem with nitrites in my tank. It's been 40 days of cycling now, and I thought it was ok.
I started cycling with a canister filter, using the "sera bio nitrivec" liquid bacteria to establish the nitrogen cycle, I put the bacteria every time I do a water change depending on how much water I change.

I had a lot of ammonia the first weeks, and it spiked up and down a bit. Nitrites started appearing soon after, and they spiked to 1.7 mg/l (ppm) more than two weeks ago. I did water changes weekly, doing a bigger 75% water change when nitrites spiked. This week, ammonia and nitrites were stable for a few days, and nitrates appeared. The readings were constant, water tested every day:
0.004 ppm NH3
0.000 ppm N02
10 to 20 ppm N03 (varying)
So yesterday evening I decided to put the little axie in, who was super happy to be in his new tank.

This morning though I tested my water, and the values were:

0.004 ppm Ammonia
0.5 (maybe MORE) ppm Nitrites
0.25 ppm Nitrates

Ph has always been a stable 7.5, temperature 17-19 degrees
I quickly tubbed the little guy out of the tank in fresh dechlorinated water (as he was before). I re-tested to make sure it wasn't a false reading, and it was not. I also tested my tap water to make sure it was ok, and it has 0 Nitrites.

My question is: WHAT THE HELL IS GOING ON IN MY TANK? Lol
I assume cycled hasn't kicked in yet, but what should I do next? Why this cycling is so weird and going up and down in values compared to the "linear" cycling phases I see online?
 
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  • Lilith:
    Does anyone know if aquacare general tonic is ok for axolotls as a treatment for bacterial or fungal infection?
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  • faebugz:
    Hi Lilith, you can check the medications page for a list of axolotl safe treatments. Although if the infection is mild, I would stick with fridge and salt baths!
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  • faebugz:
    I believe the fridge gets to about 54°, so if you can replicate that in the tank, it might be okay. I personally would fridge just to make catching them easier, and if the infection is something in the water column at all, it will hopefully die out while they're AWOL (I'm thinking like ich for fish, not sure if axies have an equivalent)
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  • Lilith:
    Ok, thank you!
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  • chitoos:
    My three inch axolotl was having trouble pooping up to a few days ago. I wasn't feeding her as often because I was scared I would just add to her constipation. I fridged her until she pooped (twice), and then began to feed her around 6 bloodworms every other day. she's been pooping everyday now, but she's at that age where you can see through her stomach and I always see poop ready to come out but has not yet passed. I don't think she's constipated anymore, but I'm not sure and i don't want to over or underfeed her... any advice?
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  • xxianxx:
    Feed it chopped worms chitoos, its big enough and bloodworm is nutritionaly deficient.
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  • xxianxx:
    Freeze dried , live or frozen bloodworm.
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  • chitoos:
    Oh ok thanks! I thought she might be ready for something more. do you have any advice about the apparent poop problem?
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  • xxianxx:
    @Lilith, fridging is not required for fungus treatment. Read my thread on treatment.
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  • xxianxx:
    Feed it more, six bloodworm isnt much, dont use freeze dried foods
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  • xxianxx:
    Feed daily , remove uneaten food
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  • chitoos:
    Gotcha, Thank you!
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  • xxianxx:
    Its probably not pooping because its hardly beign fed, it pooped in the fridge because the lower temp caused it to purge itself. If it stays constipated you can pm me
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    Hi guys. Quick question. I have newly morphed eastern newt efts. They lost their gills but they still prefer the water. I have coconut fiber, moss, hidey holes and some food in the temporary habitat for them (waiting for the other newts to morph as well). But they still run back to the water. Is it the wrong substrate? Do they prefer something other than coconut fiber? I've been doing everything else properly (According to my research) but just wondering why they haven't ventured up. Have any ideas?
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    My guess is they simply have no reason to leave. Do they still get enough food in the water? Maybe humidity is too low?
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    I spray mist the place every day. And I do still feed him. One of them has finally come out. But now I have another problem. They don't look like eastern newts! I am posting pictures on a thread I've started. If you can, take a look for me and see. :)
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    Hi guys. Can someone please tell me the sex of my axolotl. I thought I knew for the past four years but a breeder told me I was wrong. PayPal: Your security code is: 138208. It expires in 10 minutes. Don't share this code with anyone.
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    I'm sorry, please disregard the last part. Thought I pasted a photo
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