White Streak on Bosemani Rainbowfish

Tank
What is the water volume of the tank? 55g
How long has the tank been running? 2 months
Does it have a filter? Yes
Does it have a heater? Yes
What is the water temperature? 84
What is the entire stocking of this tank? (Please list all fish and inverts.)
I have 2 peacock gudgeons, 1 red tail shark, 2 white skirt tetras, 4 glofish, 6 red serape tetras, 3 swordtails, 2 cory’s, 5 boesemani rainbow fish, and a 1 gourami


Maintenance
How often do you change the water? Weekly
How much of the water do you change? 20%
What do you use to treat your water? Prime or API Stress Coat
Do you vacuum the substrate or just the water? Vaccum

*Parameters - Very Important
Did you cycle your tank before adding fish? Yes
What do you use to test the water? API Master Kit
What are your parameters? We need to know the exact numbers, not just “fine” or “safe”.
Ammonia: 0
Nitrite: 0
Nitrate: 5
pH: 7.2

Feeding
How often do you feed your fish? Every day once
How much do you feed your fish? Enough so they consume in a minute
What brand of food do you feed your fish? Seachem flakes
Do you feed frozen? no
Do you feed freeze-dried foods? no

Illness & Symptoms
How long have you had this fish? 1 week
How long ago did you first notice these symptoms? Today
In a few words, can you explain the symptoms? White stripe on back
Have you started any treatment for the illness? no
Was your fish physically ill or injured upon purchase? no
How has its behavior and appearance changed, if at all? Just the white stripe


The tank is currently infected with ICH and I am treating it right now.
This however does not look like Ich, and infact another bosemani rainbowfish had a similar streak like this on it and it passed away.
Can someone help identify this?

 

This looks like Columnaris to me. Raising the temp speeds up Columnaris. I'd lower the to like 74 or so and use 1000mg of Ciprofloxacin once a day for up to 10 days. Kraft Drug has it for the best price online at least in my experience.

 

Right now I’m treating Ich and on my third day of Ich X…

What should I do?
Also can I use a combination of melafix and peliafix

 

Right now I’m treating Ich and on my third day of Ich X…

What should I do?
Also can I use a combination of melafix and peliafix

Melafix and Pimafix won't do anything. You need to treat for Columnaris as it is more deadly than ich will be. You can cure ich at a lower temp, but it will take longer. Columnaris can kill super fast unless you have a slower variety, but that's not as frequently seen. You do what you think is best, but my treatment plan stands for getting Ciprofloxacin and treating for Columnaris first and foremost.

 

Yep, the rainbowfish died

Ill start to treat the Columnaris as its much more deadly and keep the salt in for the Ich.
Just lowered the temp to 75
I have no idea where to find Ciprofloxacin, so instead can I use Kanaplex along with nitrofurazone (Tetra Fungus Guard)?
or Furan-2?

 

Right now the tank has Ich X in it.
Is there any easy way to remove it? Can I just add the carbon media to my filter and let it run for 2 - 3 hours?

Or is it possible to just use the Kanaplex and Furan - 2 while the Ich X is in the water?