Have I unwittingly killed all my 'good' bacteria??

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JstJake

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My cycle reset itself!!!!

last week I had readings of 0 amonia 0 nitrite and 50 nitrate..

It proccessed 4 ppm of ammonia in just over 24 hours...pretty much cycled yeah??

well this week I found that the 3.7 ppm of ammonia I added on monday (to stop the bacteria from starving), is now at 2.7 ppm. I can't see any nitrites whatsoever and nitrate is at 30.


This is a mystery to me, how can a tank go from cycled to uncycled in a matter of days! All I can think of is that somehow I've killed my bacteria, but how?

I recently measured my ph. it's fallen to 5!!

I guess this is because the bacteria have a lowering effect on the ph level?

what should I do? I guess if I do a big water change then the ph will go up again (2 weeks ago it was almost 8) to it's original level.

Should I just keep on adding ammonia and waiting? Any advice anyone??

Thanks, Jake
 

richard7467

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ok firstly dont worry about the ph the ammonia effects it so theres no point testing dont do a water change just keep adding ammonia daily until you raise the ammonia levels to 5ppm then just wait have a look at my sticky on fishless cycling with ammonia the whole process takes around 6 weeks
 
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jdhef

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Also if you are using the ATI liquid test kit for nitrates, you need to really, really, really shake bottle #2. I also pound it into the palm of my hand a few times to insure it is really shaken well. The solids in bottle #2 tend to participate out of the liquid and unless they get re-suspended in the liquid, you will get a false nitrate reading.
 

mitch

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did you add fish, or did you over clean,
 
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Lucy

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It doesn't sound like you killed the cycle, just overwhelmed it a bit since you don't have nitrIte readings, but still have nitrAtes.
(I've done the same thing)

To keep the cycle going without fish, just add a couple of drops of ammonia, the tank doesn't need a whole lot.

I did a water change to get the ammonia down.
 
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JstJake

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no fish added yet.

when you say overclean, I didn't think that was possible, I did remove 90% of the alge but I didn't change any water ect.

I'm not showing nitrite now, but I did go through the 'spike' which lasted around a week, then it dropped to zero suddenly and since then I've not seen any nitrite, prehaps anything being created is being consumed to quickly?

I'm just adding 4 ppm of ammonia whenever it drops below .5

hopefully it will start to drop quicker
 

Alessa

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I found out (during my own fishless cycling and reading articles online) that the cycle might come to a stop. Also, the bacteria might lack of oxygen and become overwhelmed by too much ammonia, causing a die-off.

when i kept my ammonia and mitrite at .50-2ppm, my cycle finished in 3 days, after being stuck for about 2 weeks.

and whatever you do, please dont add fish until you're done
 
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JstJake

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yeahI 've got an air disc going, with a massive amount of surface disturbance down the other whole half of the tank so I shouldn't think that oxegen would be a problem, prehaps I did overwhelm the bacteria with ammonia and cause a bit of a slow down.

I didn't think you could over-feed the little fellas!
 

Alessa

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what i did was to change the water until my levels were down, and kept them like that until I was done... 3 days later.
 
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JstJake

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my ammonia is still at 2.5 five days after I added 3.7.

Bearing in mind that a week ago, my tank would clear 3.7 in less than 36 hours.


What shall I do? Water change it to zero? then add another 3 ppm?

I'm bit lost to be honest!
 

richard7467

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no just be patient it will come.
 
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