Is this a problem?

Check the leaves in the pic. They seem to be drooping. A little over two weeks under four t5's four feet long 18/6. 79-81 degrees with 31 to 35 RH. Started from bag seed. Soil is MG with nutes in it. Waiting for soil to dry before watering so over watering is not a problem. Seems to be rooting fine. Signs of roots are at the bottom of the cup at the drain holes. Any ideas?

should have been started in neutral potting soil first then transplanted into your other stuff.
what your seeing may be effects of early nute intake
try rinsing the soil with ph 6.5 water or let it grow out of it ( fingers crossed ) looks like its onto fourth set

Ooops ! Will try flushing... Thanks.