bettas always get sick for me.

Thanks for all the input.

I'm pretty sure this little betta was older when I got him. His fins were real long. He did grow alot since I got him. I think this one will survive his ordeal though today part of his tail fell off. :eek:
Fish auctions? I never been to one. It would be quite interesting. I would probably end up adding a couple more aquariums to my collection.
 
What kind of tank are you keeping him in?
What kind of filtration? Does it have a heater?

Betta's tend to get stressed and sick if the current in their tanks are too high. Make sure that there are some low current zones that the betta can rest in.

Even though they are frequently sold in unheated cups of water and the LSF will tell you that they don't need heat, bettas really do better with a constant temperature around 80F.
 
he's in a 5 1/2 gallon tank, heavily planted with an aquaclear mini filter with two sponges. there's a heater and I always keep it around 78. Also the ammonia and nitrates are all 0 and the ph is 7.4. the tanks been going for about a year
 
Whoa..... so far you've said is several posts that
ammonia = 0
nitrites = 0
nitrates = 0

Please clarify. If you tank has been up a year, ammonia and nitrItes should be zero, but the nitrAtes should have some value.

Also, please tell us about your water changes.....

Your pH is fine.

Can you adjust the flow on the aquaclear mini?

Sounds like the betta may have finrot. Raising the tank temperature to 80-82 degrees and adding one tablespoon of any kind of table salt to the tank might help that out, but I'm not sure if salt is okay in a tank with cories. Hopefully someone else here will know about salt and cories.
 
I never checked the nitrate on that tank, (sometimes I get the two confused.) Maybe I should check it.

I change about a third to half the water every week,

The filter has no adjustment for the flow.

Now the betta is in hopital tank. I've treated him with maracyn 2 and he is eating again and swimming. Also the fugus on his body is clearing up.
 
Plants and Nitrates

A heavily planted tank with a single betta may not have measurable nitrates, as the plants will scavenge the ammonia before the bacteria can, which means the ammonia isn't being put through the nitrogen cycle.
 
Congrats!
If you haven't already moved him back to the main tank, leave him quarantine for a month and watch him closely in case he needs to be medicated again.
 
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