Where did the ammonia come from? - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 09-08-2019, 07:47 PM Thread Starter
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Where did the ammonia come from?

Four weeks ago I tore down my 10gal, and moved everything to a 20L and added more plants and a couple guppies. Test results a few days after were 0 Ammonia, 0 Nitrites, 5 Nitrates.

Today I did a water change, and added 4pumps Tropica fertilizer. I added a new light a week ago and have been noticing the beginnings of green spot algae, so decided to test again today. My results were .25 Ammonia, 0 Nitrites, 10-20 Nitrates (after the water change). I had a cory die a couple days ago, now I'm thinking maybe I had an ammonia spike.

I added a new stronger light a week ago. That's when I noticed the GSA starting. So a few days ago I reduced my light period from 8hrs down to 7hrs. I added three guppy fry and two juvenile guppies a week ago as well.

Specs

20L
Aquaclear 50
Nicrew 30" light

1 M Betta
5 young guppies, 3 guppy fry
6 cories
4 amano shrimp

I'd say I'm moderately planted. Initial tank was set up in April, parameters have all been good since it cycled until today. I can't imagine adding three guppy fry and a couple of juveniles caused a spike? I do weekly water changes (with the exception of a couple times over the summer when we were away and I missed a week). I test about once a month now.

Any idea what may have caused higher ammonia? Should I do another water change today? Thanks!


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post #2 of 2 (permalink) Old 09-08-2019, 09:54 PM
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I obviously cant solve this for you, but tear downs have an ability to enable ammonia spikes, latent or immediate. I would say this is a side effect of the tear down and to ride it out. Water changes to keep everything safe for fish, addition of stability or safe start as well to help perhaps. That or prime to detoxify the existing ammonia at least.
Hope it works out for you, just watch those parameters closely.


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