@Spartan, they have a point because I deliberately went shallow in my planting. The germination was faster but alas I now have to deal with a few helmet heads! (mostly CV plants)
@dmforcier the MG mix was all I could find for seed starting in the shop I was at. Thanks for confirming I can leave them in it for the next 4 weeks.
Several plants from the April 1st batch now have their first set of leaves, still small though so I'll wait a few more weeks.
The decap plant is still in the soil, I didn't remove it yet so it still has chance I guess