I'm wondering about plant height , at 2 weeks...

hey there looks like your lights are already too far away, you want to get them in there around 12 inches away. depends on their PAR rate, but basically penetration for LED lights is exponential that means that 2 inches closer is 4 times stronger. Does that make sense ? so why are your grapefruit stocky? probably either genetics or simply they've not been getting enough light since your lights are too far. You'll probably get more stretch this week as the plants mature, some stretch is good because more space for buds right? too much stretch and you'll run into all sorts of issues... just keep getting the lights as close as they go you'll see a good improvement on the growth. Hope this helps 🚀