Fin Rot/Nitrite Level - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 6 Old 01-09-2011, 09:47 AM Thread Starter
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Fin Rot/Nitrite Level

I'm a newbie into the fish world after winning a Goldfish at a fair back in early November. The day after we went out and bought a tank (30 litres) and on the instruction of the guy in the pet shop put our new pet in straight away as living in a bowl was far worse. And our fish was perfectly fine. We waitied about a month and then got another fish to keep him company and all has been well up until about 2 weeks ago. I have regularly changed the water at about 20% every week since (using API goldfish aquarium cleaner and Goldfish protect in the new water and a small dose of aquarium salt) and been testing the water each week as well. The tank has a rena superclean 40 filter and we've been using API Crystal dose which I have changed every 3 weeks as instructed. Recently I have noticed that the Nitrite level has gone shooting up and that the newer fish has been floating to the surface, gulping for air. Having done a bit of reading I opted to do more frequent and larger water changes (about 50%) in order to get the level down again. This has not been successful, as it is still very high and now our original fish appears to have fin rot as has a whiteish tint to his tail fin and is also very larthargic (this has happened in the last week). I am hesitate to just add chemicals for the sake of it and would like some advice on what to do from now on.
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post #2 of 6 Old 01-09-2011, 10:36 AM
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Heya, welcome to the forum!! well the answer I imagine probably won't be great for ya. A couple things to note, goldfish have a very large bioload. They are dirty dirty, so having extra filtration then you would normally for the same amount of fish is a must. Second, i think 30 liters is just under 10 gallons right? If so, this is too small for one gold fish let alone 2. It is too small in size, and too small for a bioload. Depending on what kind of goldfish it is, it requires anywhere from 30-55 gallons at a minimum. (113 -208 liters?)

Fin rot is caused by bacteria, which in result is caused by poor water quality. You are doing the right things, but unfortunately with the wrong equipment. At this stage I would recommend returning the goldfish and changing them in for something more appropriate your fish tank, or getting a bigger tank. In the mean time continue doing 50% water changes daily with a good water conditioner. Adding medication will not help much or for long if you don't fix the source of the problem.

  • 55 Gal x2, 30 Gal, 20 Gal, 20 Long, 10 Gal x 3, 2.5 Gal, 1 Gal
  • 4 Beta's, 3 Pleco's, 4 Convicts, 4 Fire Belly Toads, 4 Serpe Tetras, 3 Angel Fish, 5 Tiger Barbs, 2 Rosey Barbs, 2 Cherry Barbs, 2 Odessa Barbs, 2 YoYo Loaches, 3 Ottos, 2 Yellow Labs, 2 Snails, 1 Black Tiger Barb, 1 Pictus Cat, 1 Balla Shark, 1 Rainbow Shark, 1 Ghost Shrimp, 1 Oscar, 2 Chinease Algea Eater,2 Tadpoles
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post #3 of 6 Old 01-09-2011, 11:51 AM
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Just wondering if you have a bubble maker. You didnt mention having one so I was just wondering.
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post #4 of 6 Old 01-09-2011, 12:07 PM Thread Starter
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no we do not have a bubble maker+
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post #5 of 6 Old 01-09-2011, 12:30 PM
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Quote:
Originally Posted by charlie021 View Post
no we do not have a bubble maker+
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That would explain the fish keeping near the top. The bubble maker is the only real way to ensure there is enough oxygen in the water. Water changes and filter runoff add some oxygen but never enough. You should definitely pick one up asap
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post #6 of 6 Old 01-09-2011, 12:36 PM
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this behavior can be caused anytime the water conditions are not ok. I would suggest testing the water first, and doing water changes until the ammonia, nitrite, and nitrate levels are 0, and then checking the behavior as this is free. If you don't want to buy a test kit (which IMO every fish owner should have) most fish stores will test your water for you for free, just put some tank water in a baggie or rubbermaid bowl. Once your parameters are good, if the fish are still doing this THEN I would recommended buying an airstone and pump. Because of the fish you are keeping in the size tank that you have, I would bet the issue is most likely water quality not lack of air.

Either way though, toxic water will kill a fish faster than water that is not oxygenated enough, and is free and easy to take care of. If it doesn't solve the problem then I would for sure go with what mcb advised. Good luck and I hope everything works out for you!

P.S. this is all of course a matter of my own opinion. :)

  • 55 Gal x2, 30 Gal, 20 Gal, 20 Long, 10 Gal x 3, 2.5 Gal, 1 Gal
  • 4 Beta's, 3 Pleco's, 4 Convicts, 4 Fire Belly Toads, 4 Serpe Tetras, 3 Angel Fish, 5 Tiger Barbs, 2 Rosey Barbs, 2 Cherry Barbs, 2 Odessa Barbs, 2 YoYo Loaches, 3 Ottos, 2 Yellow Labs, 2 Snails, 1 Black Tiger Barb, 1 Pictus Cat, 1 Balla Shark, 1 Rainbow Shark, 1 Ghost Shrimp, 1 Oscar, 2 Chinease Algea Eater,2 Tadpoles
  • 4 Ferrets,3 Gerbils, 2 Cats, 1 Dog
  • 1 Child, 1 Girlfriend
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