Disease on fish fin


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A couple of our fish have sores on their Finns very red looking almost looks like been eaten when we caught him the red spot on his tail came off in the net and looks like a large blood clot. He was also bleeding from a couple of places. We have had this before and thought we had got on top of it using a anti fungus mixture in the water
Any ideas would be greatly received 20180804_191728.jpg 20180804_191807.jpg 20180804_191912.jpg
 

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Mmathis

TurtleMommy
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Hello and welcome!

Can you give us some information about your pond.....
  • What size (gallons, dimensions)
  • How long has this pond been up and running
  • How many fish, what kind, and how big are they
  • What kind of behavior are you noticing with the fish
  • Do you have any predators that visit your pond
  • Have you recently added any new fish
  • What kind of filtration do you have
  • If you test your water (which we highly recommend doing), what are your numbers for pH, ammonia, nitrites, nitrates, KH, GH — we need to know the numbers rather than “all my water tests are good”
  • You said you had this problem before — and treated for fungus. What caused you to suspect that it was fungal
 
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Hi we have a wooden pond about a meter deep 8 ft by 4ft by 3ft this pond has been up and running about 2 years although the fish are a lot older we just moved them when we moved to a bigger pond.we have a large micro bead filtration system and it gets cleaned [ back washed] couple of times a wèek.we took a picture of the fish that had the same problem last year to a local fish shop who told us it was a fungus and we treated it with a solution that turns the water green /blue.
Do be honest we have not tested the water for a long time we are going to get a new kit tomorrow .no predators we are aware of and the water looks clear although I know this does not mean it's healthy
 
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In the absence of water quality test results, I would lean towards the problem being poor water quality.
The sooner you can test the water, the sooner we can help get things back on track.
 
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Ok what would be a good result what do I need to look for
 
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Below is a picture of the last fish with the same issue it is still alive and healed after we treated it with the FMG mixture
 

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Ok what would be a good result what do I need to look for
KH/GH above 6 each, PH 7 - 9, NH3 0, NO2 0, NO3 less than 100, a current water temperature reading to help determine how the previous readings could affect the fish.
 
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Could it be that the water is to hot along with poor ph levels helping bacteria to breed??
 
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We have around 8 large koi around a foot long and 7, 6 inch and 4 gold fish
 

Mmathis

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We have around 8 large koi around a foot long and 7, 6 inch and 4 gold fish
OK, so it sounds like your pond is maybe around 1000 gallons. Please get your water test kit ASAP, and get back to us with those results! It sounds like you may be overstocked which is very stressful to fish and is a major cause of poor water quality.
 
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Having just been to local pond shop it turns out our nitrate levels are to high so we are doing a 50% water change putting in some anti fungal treatment and test and back wash every day
 
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Well something is eating the fish their Finns are red raw and have bits missing what else do you think it could be ??
 
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The sooner we can establish you water quality, the sooner we can offer some helpful advice.
Please post your numerical water test results.
 
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Wow, you do not have good water quality.
No wonder your fish are suffering.
Nitrates are way too high, GH is high, not as serious.
Nitrites should not be registering anything.
What are the test results from your source water? (it's important)
 
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