Ammonia Spike On Cycled

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Jeff75

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I woke up and two of my ottos were dead.
I checked my water and ammonia is at 1ppm and nitrate is between 20-40ppm.

-About two days ago I put in a boiled celery stick for my ottos.
Was this the cause for the high ammonia??
-OR-

-On my last water change maybe 4 days ago I unplugged my filter as usual and swished it the bucket of aquarium water. I put it back in and it never dried out. I also have bio media but didn’t mess with it.

But... I left my filter unplugged for maybe an hour because I forgot to plug it back in..
Did this period without flow to the media/filter kill the bacteria and cause the ammonia spike?
 

el337

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I doubt maintenance to the filter media or the filter being unplugged for an hour would kill off the bacteria.

What is the tank size and stock? How often are your water changes/substrate vacs usually? What's the pH, ammonia, nitrite, nitrate out of the tap?
 

Jeff75

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-36g
-now 3 neon tetras, 3 black skirts, two ottos, 2 amano shrimp, and about a dozen rcs
-water changes about every week or two
-tap is
•0.25<0.5 ammonia
•40<80 nitrate
•7.4-7.8 Ph
•0 nitrite

I’ve never had problems before, the tank always balanced out the ammonia.
Another change I made was adding glossostigma seeds to the tank but they’ve all grown now maybe this caused it?
 
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