Need Help with sick fish...

[catfishacr]

Hi,
So i added a new Spotted silver dollar about a week ago. I had it in QT for a week and it was eating well and showed no signs of disease. After a week a put it into my 300 gallon. It has been in my 300 for 7-8 days.
A couple days ago i noticed my clown knife was acting funny and not eating normal. A couple of my clown loaches have not been eating at all the last couple days. Today I did a good status check on the fish. The new silver dollar has a cut/lesion on its lip and has a patchy white look on its sides. One of my existing silver dollars has the same patchy look on its sides. My Clownknife has a cut/bump/lesion on its lip. A couple of my loaches are breathing really heavy and laying on the bottom. One loach has a cloudy eye thats looks swollen or popped out. see pictures...

I will try to get better pictures but its hard to get it to show up on the fish. I treated the tank with a half dose of paragurad. My 1st thought was velvet but I dont know if its something else.
My water p's: Ammonia 0, Nitrite 0, Nitrate 20-30, Temp 79, PH 8.1
I do weekly water changes.
Any ideas what this is and what should i do?
My plan right know is to treat with paraguard daily and do 10-20% WC everyday before I re-dose
Should I add salt and how much should i add?
thanks what else do you guys/women need to help out?

 

[Aquanero]

If you are planning on using paragard I wouldn't mix anything else with it. Paragard wouldn't be my first choice, do you have a hospital tank?

 

[catfishacr]

To follow up. I read that triple-sulfa helps buffer the paraguard with sensitive fish.
So to sum up ive added a full dose of Triple-Sulfa and have added a half dose of paraguard.
I have a question with the salt, is it safe to use with these 2 meds? Also I have added salt to the tank whenever i add new fish in the past. Is there a way to test the salt content in such a small percentage. Ive read on hear that my salt content should be between .1%-.3% is that what i should target?

 

[catfishacr]

If you are planning on using paragard I wouldn't mix anything else with it. Paragard wouldn't be my first choice, do you have a hospital tank?

Hi Aquanero,
I just read your reply after i posed my last message about adding the triple-sulfa
Yes i have a 20 gallon QT tank. I tired to catch the sick silver dollars with no luck and quit to not add to much extra stress! Is it important info to get the sick ones out even with the added stress? Getting 3-4" fish out of a 300 is hell
So dont add any salt?
Is there something else I should be using? I had paraguard and tripe sulfa in my med cabinet and not knowing exactly what im dealing with, i figured since they both treat a broad rang of things it would be a good start....

 

[catfishacr]

I moved one of my loaches to QT. Looks like he has popeye but not for sure? Here are pictures.
Im not sure what the treatment is for popeye. I read that the triple sulfa and paraguard combo can work and thats all i had so i treated the QT tank with that. This is crazy with so many fish showing so many different symptoms. Any suggestions??? Please!