Aquarium Smells Bad

Z123Killer

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My aquarium has been set up for about a year now, the last addition of fish was about 4-5 months ago. These couple of weeks I've started to notice a fishy smell, it gets less smelly after a water change but then becomes stronger as the week goes by...

What should I do and what is causing it?
 
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Z123Killer

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75g Discus Tank said:
It's ammonia.

You need to do daily 50% WCs for a week or more until that can be controlled.
I don't think it's ammonia, the aquarium is cycled and I have a Bolivian ram and neon tetras in there which I heard are pretty sensitive to ammonia.
 

TexasDomer

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I would look into doing larger water changes - that'll help lower ammonia and clean the tank.
 
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Z123Killer

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TexasDomer said:
I would look into doing larger water changes - that'll help lower ammonia and clean the tank.
So like 10 gallons? I also have some activated carbon, should I add that as well?
 

TexasDomer

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10-15 gallons would be fine. And activated carbon might help with the smell. Make sure you're gravel vac'ing, cleaning the rim and the lid, and cleaning the filter. The smell could come from any of these.
 
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