Howdy j_a_c_1972, and welcome to MFK,
I'd just wait a few days or a couple of water changes. If they were rooted plants and came in a pot, you may have left some of the substrate on the roots and it got stirred up in the water. Or dirt from your substrate got stirred up. Keep us posted, and we'll trouybleshoot if it's a permanent effect. For now, I wouldn't worry.
HarleyK