Heat was a problem this week. I have a tiny 60x60 cm tent and my lamp heats it up really quickly. I think the black pots and tray also heat up fast in the strong light. At around day 4 I started to notice discoloration in the leaves, I'm guessing because of the heat. I sorted out the fan placement and turned on air conditioning and hopefully fixed the high temp problems. At least the plants are visibly growing now, the progress in the last 24 h is quite good.
This week I watered the plants every other day and added nutrients every other watering. Each time I gave both plants about 250 ml, of which about 20 % drained off.