My koi have ulcers and mouthrot help please

[Jaynie]

Ok so this is my story. My pond is about 6 years old. It’s 2000 gallons and I had about 12 fish although my fish had babies so I have about 20 maybe 25 In there currently. My biggest fish being about 12 inches then all the way down to an inch. I know it sounds like a lot because there are about a dozen babies in there at 3 inches or less. I’m running two filters one waterfall filter with filter pads and lava rocks and one filter box with 8 filter pads. Each filter is being driven by a mag 18. I also have Two air stones and one filter water fountain with uv light. I do weekly water changes. I just had my water tested yesterday ammonia is 0 ph is 7.5 nitrates 0. I have been fighting with ulcers all summer on my fish. This is the first time I have ever had this problem. The problem has gotten so bad that two of them now have mouth rot. I treated the pond for 3 days with broad spectrum. I did notice every once in a while I would see a fish flash. Since the treatment I have not seen any flashing at all. Treatment ended a week ago today. But now I noticed another two of my fish have ulcers on them again after treatment. I currently have three fish in a stock tank that
I am injecting with baytril once a day for 3 days then every other day for a total of 7 days. They are looking so much better. I’m not sure if the fish with the bad mouth rot is going to make it but he seems to be getting better with the injections. But I don’t know if his mouth with ever grow back. So my local fish stores and koi nursery’s here are really advising me to add 40 pounds of salt to my pond to help them heal. I am so turn over adding it. I also have several water Lillie’s and grasses and canna plants. But the most important thing is the fish. I honestly don’t care about the plants like I care
About the fish. Any help would be wonderful. Thanks so much

 

[sissy]

do you have city water and do you treat it and how much are you feeding the fish ,something has to be off .How old is your testing kit

 

[Jaynie]

Yes city water. And my test kits are a year old and I also bring the water to my local breeder to have him test it as well. He doesn’t understand what is going on with my water since the levels are perfect.

 

[Jaynie]

I feed the fish once a day and every once in a while they will get fed twice a day but never is there extra food floating in the pond for more then 5 mins

 

[Lisak1]

I responded on your other thread - your pond is very pretty, by the way! love the cannas!

 

[sissy]

city water needs to be treated and if you just put the plants in the pond without checking the roots you could have brought something bad into the pond

 

[Jaynie]

city water needs to be treated and if you just put the plants in the pond without checking the roots you could have brought something bad into the pond

All plants have been in there for years. My city water is fine. I add prime anyway when I do water changes.

 

[GBBUDD]

Over stalking, over feeding, city water supplies, stress can quickly change water parameters in smaller ponds or tanks. stress coat is a city water heavy metals neutralizer that has a big bonus it promotes fish slime which fish need and I have used to treat the ulcers and skin / scale damage caused also by a duck. there are other brands who also have the bonus of boosting the skin health. tetra has one as well.

 

[GBBUDD]

look at start right, stress coat or tetras water conditioner these have a skin / slime booster I have used this to help the fish heal wounds ulcers, and bites from a duck.

 

[Jaynie]

look at start right, stress coat or tetras water conditioner these have a skin / slime booster I have used this to help the fish heal wounds ulcers, and bites from a duck.

Thanks so much for the information. I use prime I think it’s the same as stress coat. I will look more into it today. Thanks

 

[Jaynie]

look at start right, stress coat or tetras water conditioner these have a skin / slime booster I have used this to help the fish heal wounds ulcers, and bites from a duck.

Thank you