Ich in our tank

[willia3d]

For some reason I brought 3 cardinal pj' fish and now I have ich I'm my tank. Could it have been fromtjem. Also how to rod my tank of ich? Doing water changes at 20% 2×.week treating what's left of my fish, only .the pj
ANY suggestion
We are new to t j is. Tank is 2 months in the new
Pleasehelp.

 

[nhat]

There are many facts that cause itch. If your tank doesnt have any coral then low down your salinity to 1.010-1.015 very slowly. It will help, otherwise you must take out all fishes to treat with copper in different tank

 

[willia3d]

I have soft coral in tank. Heater temp at 80 degrees for a week .

 

[Humblefish]

I would read this: https://www.reef2reef.com/threads/understanding-ich.188770/

And then this: https://www.reef2reef.com/threads/how-to-treat-ich.191226/