I would just use Kordon rid ich plus and get the ich killed right...
Start with half dose day one [after large water change]
then if all is well and clowns are still active go to full strength on day 2..
Mollies and clowns are known as ich magnets to many..I have had my clowns for 10-15 years now.
This IS how I have treated my tank when other fish had ich...
I am ALL against the heat and salt crap....
If you don't kill the ich it will kill your fish...
Continue treatment for 3-7 days after you see last spot.