After germination I moved them into plastic cups instead of directly to the final pot.
With a week in, I realized my mistake and transfered then to the final medium - and also transfered both NL and Lemon Blossom to the medium (they germinated the previous night). I'll give them water and nothing else for another week, probably.
I measured the runoff and it displayed 1.4k ppm, so I guess I should have had flushed better before reusing the soil (had some brickweed seeds for about a month just to practice LST and pruning), I'll water every other day to make sure it decreases shortly.