T5 veg? For seedlings

Hello. Sounds like you run a 2 stage garden. With a two stage garden I take clones and then flip the lights to 12/12. At this time I also start my seedlings because it's nice to have everything the same height. If they are regular seeds and you have to sex them I start those 2 weeks earlier. You need to keep those little plants going for as long as you are flowering, then a quick cleanup and get them into the grow room and take clones after 2 weeks of veg and do it all over again. Yes you can keep them going just fine in your closet. A small disk fan to keep the air moving and a good supply of fresh air and don't let them get to hot. Good Luck. Chuck.