D-4: I started 3 seeds in a glass of water.
D-3: After 24 hours the seeds hadn't cracked yet. I filled 3 1 liter pots with moist coco coir and planted the seeds anyway and covered them with plastic wrap.
D0-1: The first plant sprouted 3 days after planting and second the following day. The lights are on 100 % power and about 60 cm from the pots.
D2: I removed the third pot. The seed had only just cracked and the root just poked out of the shell. Maybe with time it would also have sprouted, but I only have room for one plant anyway. I'll keep the other two around for now and discard the weaker one when the time comes. The plants are about 2 cm tall now.