I have a 10 gallon tank with 3 balloon belly mollies (now 2) and 2 glowfish. I know that seems overstocked, but it is not yet as the mollies are relatively small and young. The tank was set up on July 11th and is cycling. My ammonia levels have already gone down and my nitrites are starting to.
About a week ago one of the mollies, who are all normally very active, started hiding and not moving at the bottom of my tank. He seemed fine and would come up for food and would occassionally swim, so i didnt think he was sick. He did this for 4 days and then on the 5th I found him dead at the bottom. Any ideas why this happened?
The problem is now, one of the other mollies is acting exactly the same way for the second day, he's my favorite and i would really like to save him. Please help!
sounds like ammonia or nitrite poisoining, a large water change should help
ammonia is at zero and ive been using Prime...
It does sound like ammonia/Nitrite poisoning. What kind of test are you using? When was the last time you've done a water change, and how much was it? How often do you normally do them? As Sik suggested I would do a water change either way. Clean water is the best medicine.
i'll do the water change, normally i do like 20% every 5-6 days. im using an api test kit, so it's showing the bounded safe nitrite so it's inaccurate, but i had it tested earlier this week and it looked like it was diminishing.
As the others have already mentioned, you have sick/dead fish because they were going through the cycling process/ammonia & nitrite spikes. It can be inevitable that some fish will die during the process because it places a great amount of stress on them.
You say that you are not overstocked, but it is possible that you were in this case i.e. cycling and in a smaller tank. Balloon Mollies are not the best fish to cycle with, they come with their own genetic/internal problems. If fish are already in a weakened state, going through the nitrifying process can be too much for them...we never know how much stress fish have already gone through before we buy them, but I would say it is quite a lot.
As already stated, keep up with the water changes and monitor the levels every day, they will tell you when you need to do water changes. Doing them ever 5-6 days isn't enough, if you were doing them at that frequency from the beginning. You have probably already seen this sticky on cycling, but just in case...
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