Adding Maracyn to salt treatment ok?

[Warhammer]

I got 12 new guppies to restock an empty 24gal aquarium from both Petsmart and Petco. 

While in the 10gal receiving tank I ran one full application of Paracleanse and had just started a round of Ich - X (I didn't know I could apply them all together at the same time...) when two of the males began having a hard time swimming, and one of the females began to get a white patch on her back (Pics). I went to start a treatment of Maracyn, but realized I bought Maracyn Two instead of the regular. I ordered it promptly but all three died the following day, and a second female got the white patch. 

This last Thursday I started treating them with salt, at 1Tbsp per 2 gal of water. This seemed to clear up the white patches, but the guppies still got lethargic and died... 

As of today, 3/13 I only have two guppies left and the Maracyn just came in. 

Is it ok to add Maracyn during salt treatments? Or do I need to start water changes?

What else could be affecting these guppies?

Thank you! 

[Frank]

I'm only telling you what my local fish store owner told me.

She said that she's never read any medication instructions say that they couldn't be used along with salt. 

Edited March 14, 2021 by Frank

[Warhammer]

Works for me, thank you!

[Colu]

That looks like columnaris is gram negative bacterial infection maracyn treats gram positive bacterial infections you won't to treat with maracyn2 or kanaplex you can use salt with both of these