Help! A fish dies every night!

  • We are currently upgrading MFK. thanks! -neo
Thanks for all the thoughts, ideas, and tips guys. After treating with paragard (2 more days left since I’m switching to only a week like someone said) there has been no sign of any illness. All the fish have been very active and seem very happy. All my parameters have been stable and good. Have not had one fish die since the catfish for few days now. I can’t remember names, but for the guy talking about it may not be ich and said if no new fish have been added in 6 weeks, there have been fish added in just this past week. So I’m assuming it was ich. But like I said before, seems like all the fish are happy and doing good
 
The Morning said:
Ammonia, Nitrates and nitrites are all zero? What did you use to get this reading? I do 50/60% water changes twice a week and can’t get nitrates to zero.
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I don’t do water changes near that often. 2-3 times a month depending on readings, how the water looks and how the filter is handling it. I have very good water where I live, minus it being ever so slightly on the hard side. But it’s not terrible. I also don’t ever do 50% water changes. I’ve always felt that was too much for fish to handle and typically stick to 15-25% change max. Other than that just adequate filtering and don’t overfeed. I never really try to keep nitrates down I focus on ammonia and nitrites more since they are a lot more deadly. Honestly some of it may just be luck to have nitrates at 0.
 
NoobAquarist said:
It's really hard to get nitrates at zero (you have to do that weird constant drip thing), but luckily they are not as deadly as nitrites and ammonia. As long as they're below 20 ppm, you're fine.
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I put this on another thread but I will do it here since I made the same mistake. I retested, still no nitrites or ammonia. But I noticed after looking closer that it appears to be a darker yellow than the very light yellow on the paper chart. Idk if this means it’s between 0-5 ppm?
 
skjl47 said:
Hello; This just does not seem right. WC two or three times a month and 0 nitrates?
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I’ll do a test again and post a picture. Not sure if it’s gonna be very noticeable or not. It’s a darker yellow than the yellow on the chart ( look at previous reply I did)
 
Okay, that makes no sense. How good of a filter do you have???? How cycled is your tank??? There is no way that can be accurate, with your water change frequency. I mean 0 nitrates is hard to achieve even if you do permanent drip AND water changes (right before testing). Then I would believe it. But whaaaaaaaa...
 
Here’s all three tests Just to throw it out there. Ammonia on left, nitrite in middle, and nitrates on right. image.jpg
 
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