XRatedViper XRatedViper
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  • Posted on: 20/12 14:44
Fishless cycle readings #1
Hi,

I started a fishless cycle on 5th December, I got my first nitrite reading on 17th December which was 0.25. I've just done a test now and it's at 3ppm, I thought it was too early to do a nitrate reading but decided to do it anyway and it's at 30ppm. Is this normal to get these readings this early? My tank isn't new, I've had it for 6 years but it's been off for a year and just started it back up again. I've helped it by having the temperature at 26 degree's and I've got 2 wave makers and a spray bar creating plenty of surface agitation. I'm using the API liquid test kit which was bought brand new on the day I started the cycle and I've been bashing and shaking them before use just in case. My readings are below:

5/12/19 - Ammonia 4ppm
7/12/19 - Ammonia 4ppm
9/12/19 - Ammonia 3ppm
11/12/19 - Ammonia 2ppm (added 2.4ml Ammonia) Nitrite 0
13/12/19 - Ammonia 4ppm
16/12/19 - Ammonia 3ppm
17/12/19 - Nitrite 0.25ppm
18/12/19 - Ammonia 2ppm (added 2.4ml Ammonia)
20/12/19 Ammonia 2ppm - Nitrite 3ppm - Nitrate 30ppm

Thanks :)
Fishlady Fishlady
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  • Posted on: 20/12 20:55
Re: Fishless cycle readings #2
The chances are that nitrate is in your tap water to start with - most UK water has some nitrate in it; mine has 40ppm. Test it to see.
XRatedViper XRatedViper
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  • Posted on: 21/12 8:04
Re: Fishless cycle readings #3
Ahh ok, I've just tested my tap water and it's about 10-20ppm Nitrate. So should I just continue to test and add ammonia when required?

Attach file:



jpg  IMG_20191221_080333.jpg (1,688.42 KB)
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Fishlady Fishlady
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  • Posted on: 21/12 13:12
Re: Fishless cycle readings #4
Yes, test daily and top up the ammonia whenever it drops close to 0. When you find both ammonia and nitrite are 0 within 24 hours of dosing your cycle is complete and you can do a large water change to reduce nitrate before buying fish.
XRatedViper XRatedViper
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  • Posted on: 21/12 15:41
Re: Fishless cycle readings #5
Thank you for your advice ☺️
XRatedViper XRatedViper
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  • Posted on: 9/1 8:55
Re: Fishless cycle readings #6
Hi, I'm still going through the cycle, and im still getting the same results. It's been 3 weeks since I posted this topic and my ammonia drops to 0.25 after 24 hours so that's converting pretty well, but the Nitrite has been at 2 and nitrate changes between 20 and 30. Is my cycle stalling? Should I not add ammonia and wait for the nitrites to convert first?

These are my test results today, and I've also attached a picture of the results for nitrate from my tap water and tank water. The darker one is my tank

Thanks

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jpg  IMG_20200109_083825.jpg (2,231.72 KB)
16632_5e16ea423b963.jpg 2736X3648 px
XRatedViper XRatedViper
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  • Posted on: 9/1 8:56
Re: Fishless cycle readings #7
Sorry, other tests didn't post, here they are

Attach file:



jpg  IMG_20200109_084331.jpg (1,650.04 KB)
16632_5e16eabe91f42.jpg 3648X2736 px
Fishlady Fishlady
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  • Posted on: 9/1 9:58
Re: Fishless cycle readings #8
It looks to me as though nitrite is at 5ppm, which means, in reality, it may be considerably higher as that's the limit of the test. Nitrate in the tank is higher than the tap water so some nitrite conversion is happening. This will continue, slowly at first but then more rapidly as the colony of nitrite eating bacteria expands. You may not see a drop in nitrite on the test as it will take a while to get down below 5ppm, but nitrate should continue rising to give an indication that things are proceeding. I would estimate you have about a week to go.
XRatedViper XRatedViper
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  • Posted on: 9/1 10:16
Re: Fishless cycle readings #9
I hope so 😁 would you recommend still adding ammonia and if so to what ppm?
Fishlady Fishlady
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  • Posted on: 9/1 10:33
Re: Fishless cycle readings #10
Yes, continue with the ammonia to the same ppm as you've used so far. Without it, the ammonia-eating bacteria will die off.