I've never fucked with outdoor plants, I would love to but waiting till i'm in a legal spot, but could you just bring the plants inside and keep them in a dark room or is that bad?
I'm running a 600W BML Spyder over top about 12" away and a 500W Blackstar Flowering for side lighting, so I think the too much light thing might not be it
what are your temps? you say they stay the same? I grow only with LEDs and typically when they are curling up its typically either too close to the light or heat, your 24" away so I'd say heat but I don't know your temps
If they just popped, I wouldn't move them until they are a little established, if you fuck with them that young and something happens its done. Just do it while they're still in the seedling stage, the first 2 weeks or so.
lol I feel you, I got the super root air pots and that shit is a breeze, just unscrew and place the plant. On the bright side you have an extra plant :bigjoint: