now makes sense.It is an led light. This is the setup i am using.
https://www.caligrowkits.com/hydroponic-kit.php
Ok, they're back in the dome and are rooting well. Thanks.I put a layer of medium on bottom, then my rapid plugs. I run my water 1/2" up into net pots since I have no drip lines. I could leave it there with no ill results but I usually keep it at the bottom or little above and get roots like these.
Also those look too tiny for those net pots, I would keep em out till they get a bit bigger with no top feed line.