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Old 05-02-2014, 01:43 AM   #1 
YekeYak
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Question Strange red sore / blister on betta fin - Please help!

My fish suddenly (seemingly overnight) developed a red sore / blister on his anal fin. I'm having a difficult time remedying this and can't seem to find any solid information on the internet about this problem. If you have any experience with this problem please let me know. I appreciate any and all suggestions. I'll include a picture in the following post. Thank you!

Housing
What size is your tank? 2.5 gallons
What temperature is your tank? 78 - 80 Fahrenheit
Does your tank have a filter? No
Does your tank have an air stone or other type of aeration? No
Is your tank heated? Yes, I have a 25-watt heater.
What tank mates does your betta fish live with? No other tank mates.

Food
What type of food do you feed your betta fish? Nutrafin Max flakes. Approximately two times a month I supplement his diet with live brine shrimp for a few days.
How often do you feed your betta fish? Twice a day.

Maintenance
How often do you perform a water change? Every five - seven days.
What percentage of the water do you change when you perform a water change?
100%
What type of additives do you add to the water when you perform a water change? API Stress Coat & Nutrafin Biological Aquarium Supplement (helps reduce ammonia and nitrates)
Symptoms and Treatment
How has your betta fish's appearance changed?
Sudden development of a large red sore / blister on anal fin. This has since turned black (looks like it could be dead skin tissue).
How has your betta fish's behavior changed? He seems slightly lethargic, occasionally sitting on the bottom of the tank. He has also stopped blowing bubble nests which he used to do quite frequently. His appetite has not changed.
When did you start noticing the symptoms? Around two weeks ago, the red blister seemed to appear overnight.
Have you started treating your fish? If so, how?
Initially (when I thought this was fin rot) I added aquarium salt to the tank water at appropriate intervals. Later, when I spotted the red blister I stopped using aquarium salt and medicated him with a product by a company named 'Waterlife' for fin rot & ulcers. It was a myxazin solution and I used the appropriate amount for the correct period of time (five days). I didn't see a great deal of improvement. It has since been a week and the red blister has turned black. I don't know if this is due to the efficacy of the medicine or if it can be attributed to time having passed.


I went to an aquarium shop and showed the owner a picture of my fish (I live in Hong Kong). He suggested I use a product made by Aqua Gem called Fungus Proof Water Treatment. It is made by a UK company and says "it's effective for: mycotic ulcer, erythrodermitis, fin, gill, mouth rot and prevents fungus diseases". I don't know what type of medicine this is and there are no 'ingredients' listed.

The first medicine I used was for baterial infections, the one I'm thinking of using is for fungal. Do you think I should try this medicine? I'm wary of over medicating my fish.

Does your fish have any history of being ill? No
How old is your fish (approximately)? One and a half years
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Old 05-02-2014, 01:47 AM   #2 
YekeYak
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Old 05-02-2014, 03:06 AM   #3 
YekeYak
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I'm including some additional information about water parameters, I used the API Ammonia & PH test kits:

Ammonia: 0.50 ppm
pH: 7.6

I used to add pH down drops to the tank water, but stopped doing that around the end of January. I probably should though since pH 7.6 seems way too high, right?
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Old 05-02-2014, 04:35 AM   #4 
Valkyrie
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Ammonia is too high. You need to do a water change and being that down, if anything the ammonia will exasperate the blister.
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Old 05-03-2014, 09:31 AM   #5 
YekeYak
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Do you think I should add aquarium salt to the water to speed up healing time? The blister has now turned black. I wonder if it will just fall off on its own? I have no idea what caused this - any ideas?
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Old 05-03-2014, 10:00 AM   #6 
Netti
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I'm no expert, and I've never kept a Betta in an unfiltered small tank like that, but to help him heal and ensure a healthy environment I would do more frequent water changes, probably once a day.

It is possible that his fin will heal on its own just with clean warm water. You could also try soaking his food in some garlic juice, it has anti-fungal, anti-bacterial properties, and helps boost his immune-system.
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Old 05-03-2014, 10:31 AM   #7 
beautiful Betta
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I think that sore as possibly been caused by Ammonia, what type of test kit are you using, Liquid or strips? If strips they could be giving incorrect readings, they are unreliable.

With no filter you need to be doing a 50% water change mid week as well as your current routine. Seachems prime if you can get it there would be the best water conditioner to use as that would turn any ammonia, nitrite to a less toxic form. And you can also add that to the water in drops per gallon I think to keep the ammonia detoxified.

At the moment you really need to be looking at keeping your water super clean to help his fin heal.

The other thing it could be is a tumour, but they usually tend to be a whitish grey colour. If that's the case then nothing you do will remove it.
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Old 05-03-2014, 10:42 AM   #8 
Wiggyl
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Ammonia should be 0. If your tank isn't cycled, that's not going to be realistic leading up to a water change, but like bB said, Prime in an effective tool for rendering any ammonia you have non toxic. It doesn't replace water changes though. You need to do at least one 50% and one 100% change a week. I would personally do two 100%s because I find it easier in that size of a tank to just dump it all.

Don't use the pH dropping chemicals. Those are unstable and they can cause large shifts in the pH. Bettas can adapt to many pH levels, but if you really want it to change, you can add some plain rooibos tea or indian almond leaf (also called catappa leaves in pet stores) to your tank. It's a natural way that continuously releases tanic acids, which are good for your betta (in healing too) and lower pH. It's possible that the tank reacted poorly to the stopping of pH chemicals and weakened your fishes immune system, leading to being more susceptible to ammonia poisoning (another side effect).

With warm clean water and if you can get it, some rooibos or IAL, your betta should heal just fine. IAL also has the added benefit of helping keep wounds sterile, so you don't need to salt.
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Old 05-03-2014, 10:57 AM   #9 
BettaLover4life
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Awesome!!! My dad is from Hong Kong!
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