George,
I'm an old timer and totally not "in the know" regarding leds. But I have experience growing ganja. I did small plant E&F for years so to keep that system functioning I needed 25 clones every 8 weeks. I was able to do that with a single bonzai'd clone momma no more then 18" tall. I kept clone mommas of my fav strains. Grew them in dirt under T-5 flouros. Had solid new branch growth with clone Mothers which is what you need.
JD
Edit-PS: It's an easy wiring job to mount ballast remotely on a T-5 for heat control.