I now have a new problem. My baby koi has some white stuff growing in her side and her anus fin is all thick and at the point if connetion to the body it is swollen and pink or maybe red. She is eating good, but not swing as much. Can I put her in a one gal tank for now? She is only appox. 3-4ins. I treated the tank for fungus, but no good results noted yet. What about Stress Guard? Will that help?

It sounds like an infection of some sort, usually caused by poor water quality. You most definitely do not want to put a 3 or 4 inch koi in a one gallon tank!!! What size is her main tank? What kind of filtration do you have on there and how often do you do water changes? Koi need even more space to themselves than goldfish do, theyre incredibly messy. Can you describe a little more of waht the white stuff looks like? Is it fuzzy at all, or cottony looking? Im not so sure its a true fungal infection. I would suggest treating with a broad spectrum antibiotic like Kanacyn.

If it is fungusy try a salt bath 0.9 - 3% solution, salt the tank she is in with 0.3% (do not use salt with iodine - use aquarium salt only).
Keep water pristine!

She is now in a 55gal with 6 other kois. Now there is an other sick fish. I have them in a big net in the tank. The 1gal was only going to be a hospital tank. I have a bubble wall, a Tetratec PF300, live plants, I have no graval or rocks on the bottle, I add salt with each water change, and I change 30% twice a week. I test the water next day. It is in the low stress level. I keep tring to get it down. It is only the Nitrate or is it Nitrites that is a little high. I have a 75gal with 7 small kois in it and no live plants and they are OK, but my 20gal got Ick after the last water change. What is the deal here. I thought that live plant was good for fish. I only feed the tank with live plants once a day and the plain tank twice. Can any one tell me what I am doing wronge. :thudMaybe I am not putting enough salt back.

6 kois in a 55Gal sounds very overstocked!

Ammonia should be at 0, nitrite 0 and nitrates under 20. Levels higher than this are very harmful to your fish so you need to lower them with daily 30% water changes.

The last 30% water change almost killed my kois. They all have a VERY bad case of fin rot and fungus. I have already lost three. I am meding the tank, but they still look BAD. I am afraid to test the water.

It might be easier to treat them if they're in a smaller tank with *tons* of filtration.

My own three koi were quite happy in the 10 gallon tank I had for them.

So I suggest grabbing two 10 gallon tanks or so, buying filters meant for a thirty gallon tank, and stick 2 or three of the healthiest remaining koi into these little tanks that are salted and ready to go. Then do daily 25% water changes and take readings every day to know if you should do more. Also buy some Amquel+ and treat all the tanks with that, as it'll knock out the ammonia and nitrItes.
Feed them either medicated food, or some good high protien frozen live food (mine got brine shrimp, which they love) and then hope.

Olny two left. I got a 10gal tank, but not sure if I should use new water or the same water ( with the med in it). I will try any thing. I am losing hope now. My prettest ones are gone. My hubbie is helping me with it. He said I can get some more in the spring. He feels bad that mine are sick and his is not. Remeber two tanks, haft in one an the seven in my daughters Christmas tank.

Use brand new water. Just be sure to check parameters every day and do a 40% water change at least once a week. Add the salt (I'd use 1 teaspoon per gallon in this case), and use the airpump and stone from the larger tank (after a good long rinse under hot tapwater to kill things off that need killing) as they could use the extra oxygen.

I think that what went wrong wasn't really with you, but likely with the fish themselves. When you next go to get baby koi do *not* get any that are thin looking. They should look like healthy common goldfish from the side (see the pics of my Koi Boys when they were small enough to hold in my hand). This shows that they have been fed well, and are capable of dealing with the food.

Also check each individual koi for any signs of redness in the fins or pink spots on the body. I thought I'd found a healthy feeder until I noticed a little red dot on it that I'm sure is going to turn out to be an ulcer.

Make sure that the back fin isn't held flat, or even half-way down, for most of the time the fish is swimming.

This will help gaurantee that you get healthy fish next time. Good luck with your new guys.

Feed them high protein and medicated food if you can. Frozen brine shrimp are real nummy for them.