New ten gallon (cycled?), and new stock died.
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New ten gallon (cycled?), and new stock died.

This is a discussion on New ten gallon (cycled?), and new stock died. within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> So I just recently built dividers for a ten gallon tank I had to put a couple bettas in that were in bowls. The ...

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New ten gallon (cycled?), and new stock died.
Old 01-26-2009, 09:14 PM   #1
 
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New ten gallon (cycled?), and new stock died.

So I just recently built dividers for a ten gallon tank I had to put a couple bettas in that were in bowls. The tank is divided into four sections, and I transferred over a cycled filter along with a new one which will be the permanent filter. I added two bettas first which were doing fine, then a couple days later(yesterday) I added a group(6) of neon tetras. Today all the neons were dead and the bettas were just floating at the top of the tank in corners only moving a little every 10 minutes or so. My thoughts are either the neons could have been sick and brought it to the tank, or they could have succumbed to acute poisoning from the silicone I used to secure the dividers. I made sure to get 100% silicone with nothing added for mildew resistance, so I am not sure about that. I also just transferred the bettas back to their bowls to see if they will get better with new water and their old enviroment. Whay could have happened? Their symptoms are: Lethargic, not eating, sometimes their tail end floats at a 45 degree angle. The tank parameters are: Ammonia 0, Nitrites 0, Nitrates 5, pH 7.6. Ideas of what I could try?
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Old 01-27-2009, 07:19 AM   #2
 
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How long did you let the silicone cure before adding water?
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Old 01-27-2009, 07:24 AM   #3
 
I'm not sure if it helps, but there is a such thing as aquarium silicone. I'm dividing up a tank myself and am on the lookout for it.
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Old 01-27-2009, 07:29 AM   #4
 
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Aquarium silicone is just pure silicone. You can get it at most fish stores or Petsmart.
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Old 01-27-2009, 08:09 PM   #5
 
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I let the silicone cure 3 days, which I thought would be more than enough. I have a theory as to why the neons all might have died...... I bought them from Petco, which now that I think about it, almost all the fish I have bought from petco have died. I think it is because my acclimation process is only about 30-45 minutes long with partial water additions 2-3 times, and that may not be long enough for the fish to get used to my tanks that do not have salt in them. Petco always seems to have at least a cup worth of salt in all their tanks all the time, and I don't use salt, so I think that the difference in the water density might be too great for the fish's osmoregulatory system to handle without a longer acclimation. Even if this is true, it doesn't account for the bettas inactivity....
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Old 01-27-2009, 11:13 PM   #6
 
You may want to start doing a drip acclimation. The pH may be really different also. Could have been a pH shock?
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Old 01-27-2009, 11:57 PM   #7
 
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The pH was very close, so that probably wasn't it. As far as the drip acclimation goes I had a question: Do the fish have to see their new enviroment before being thrust into it? I was going to have a specific container for drip acclimation, but the only way I can figure out how to do it is to put it beside the tank. Can I put the fish in there and then just net them out and add them to the tank? Or is one of the reasons(other than temp) you submerge the bag because of them needing to see where they are going to?
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Old 01-28-2009, 07:30 AM   #8
 
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I don't think that has anything to do with it. Personally I don't drip acclimate. I use my aquarium bucket (which is solid red) and put them in and put in a bit of tank water every ten to fifteen minutes. Depending on the fish some get longer acclimations than others but all get at least an hour and I about triple the volume of water they came in. I wrap the bucket in a towel to make sure it doesn't lose too much heat and I cover it with another towel to keep out bright light. Now if Petco is using a lot of salt that could be causing a problem. I'd definitely prolong the acclimation in that case.

They bettas, I don't know. Have you checked your water again since the cycle finished, just to confirm it? With no fish in you could dose it with ammonia and check to see if it gets processed.
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Old 01-28-2009, 08:43 PM   #9
 
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Well that helps a lot to know that the fish don't need to "see" their new home! I don't have ammonia, but I think that I have another way to create a controlled amount with shrimp in another bowl. I am going to take the tank apart, re-boil the rocks, clean up the excess silicone, and let it dry for a few days, then start over and see what happens....
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Old 02-01-2009, 03:31 PM   #10
 
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The only time I will put something with new silicone in it into a tank is after I can no longer smell the silicone. That can vary from a few days to over a week but I figure if I can smell it, there are still chemicals coming from the silicone curing process. Your nose can pick up odor molecules in the parts per billion range so when you can't smell it, it is not there. In the case of a tank with new dividers, I would literally stick my head into the empty tank to see if I can still smell it. I have never lost fish by doing it this way but I know that is not real proof that it is a good method, it is merely anecdotal evidence. Chancy at best.
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