Oh well... That pot is on balcony, on a table, if I brought it closer to window, it may have too much sun (although, being on North, it's kinda OK... I only have it in the morning).
And... anyway I've got quite enough seedlings of one kind, and now about 10 of the slower one.
Un-germinated seeds still visible... but I am thinking what's best for the plants I already have.
I will water less and hope the moss will go away.