Ammonia- 1.0
Nitrite- 2.0
Nitrate- 10
Ph-7.2
Ph out of tap- 7.6
tank size- 55 gallons- 48x13x20- running for two weeks
Top Fin filter- 330 gph, Penguin Biowheel filter 200 gph
water changed every 3-4 days, 11%
Fantail-3 inches, Red Cap Oranda- 4 inches, two Black moors- 3 inches
conditioners-Aquarium phamasutecals stress coat
medications- none
new fish-no
food- tetrafin goldfish crisps, Hikari freeze dried brine shrimp and algae wafers, peas
clamped fins
gasping at surface

This morning I found my fantail with clamped fins and he would sit at the bottom, then float to the surfacde then float to the bottom, so I did a water change. After he continued doing this, I looked on here at the disease page, and thought it could be some sort of flukes, so I added salt to the water, and gave the fantail a salt bath. Now he is gasping at the surface, and I don't know what to do. Please Help Me!

Cycling a tank with fish is always stressful forthem. Keep your ammonia and nitrites under 1 until they go which will take another 4 or so weeks.
Adding salt at 1 teaspoon per gallon will help with the nitrites phase.

I added the salt, but noww he is swimming a a 45 degree angle, and there is a red vein on his tail.

The red vein is caused from the high ammonia and nitrite stress. Keep the tank salted to .1%, do daily water changes (replacing the proper amount of salt to keep it at .1%) to keep the ammonia and nitrites very low, and feed your fish sparingly to cut down on extra waste/ammonia in the tank.

(1 teaspoon of salt per gallon will give you a .1% salt concentration)

I would like to add that you should change more than 11 % of your water. With levels like that I would start with a 50% water change, then a daily water change of 20% while keeping an eye on your paramaters. If you continue that and keep your levels under control the streaks will dissappear on the fins. This takes some time though. But like kscoleman said... the streaks are from nitrite levels being too high (in your case)

Unfourtunately, I found him dead this morning . Thanks for all your help.

I'm sorry Dave

Sorry about your fish

FYI- salt will not touch flukes. It does help with a lot of other parasites though in concentrations of.3 or higher. If you think flukes are a problem, Prazi is really good and not harmful to your cycle. Toothless has some good threads on flukes and quarantining new fish on this site.

I am so sorry about your fish. :-(

Just on the offchance, what type of salt did you use to treat him ? Table salt has anti0caking agents and other things that are harmful to fish so you always want to check the ingredients list for salt you are going to use and make sure the only thing listed is salt. I did not know this before someone told me so I am mentioning this on the offchance that you did not know.

RIP little fish.