Fish issue

[Steve]

Question to see what you guys think. All the cichlids in the main tank are showing marked signs of improvement for sure. The clown loaches are rubbing still on decor. I'm treating the main tank with heat and salt. At first I was thinking the clowns still were rubbing due to the velvet, but now I'm wondering....maybe they are actually just rubbing because of the salt since they are more sensitive to salt than other fish?