Please Help! Black Molly With White Fluff!

[smiley346]

I have 2 molly's 1 black and 1 dalmatian. Only the black 1 has what looks like white fluff on her body and eyes. The other fish doesn't have anything at all. I am currently treating her for white spot (Ich) but i'm wondering if she might have a fungal infection. I am currently using King British WS3 at the moment and I wondered if I can use anti-fungal and fin rot no8 by Interpet at the same time or not. I am doing water changes every 2 days along with the WS3 treatment and the heater has been cranked up to 83 degrees f. Water parameters are fine. Please help.
 
To clarify I want to know what my fish has and if I can use both treatments at the same time.
 
Thanks.  

 

[This Old Spouse]

It's certainly not ich so I would stop that treatment, use some carbon in your filter to remove the meds. It sounds like a fungal infection. It's also not fin rot, so I would just use the WS3 if that's an anti-fungul medication. 
 
After using carbon, do a 90% water change (just leave enough water in the tank so the fish can swim upright) and then treat with the WS3.
 
How big is your tank, and what do you mean "water parameters are fine?" Do you have a liquid test kit to post the actual readings?