Hey SS, yes they have looked like yours all along and makes me think you will only end up with 2 or 3 oz. But I'm sure with a little practice and tweaks the light you have can yield at least 6oz.
The heating pad I use is only 10W, it is a lot more cost effective over heating the whole room using a HPS light for a space heater. In the summer months, I turn it off since over 90F is just too hot and I have problems keeping things cool since I don't have A/C.
I haven't tried a UFO Mmmmic but I don't think they work all that well. The HSS lights have the full spectrum and I think they work a lot better.
I've been thinking more about any symptom of "stalling" and I don't think I've noticed it really. I've had plants go into shock from the temperature, from the PH, and from superthrive.
I don't understand my issue with superthrive and the other B vitamin supplements,I have banned them for a long time since they have only caused me trouble. My transplants used to go into shock for 3 days, but that was cut to only one day when I didn't use superthrive. Using Bionicare Liquid Karma completely eliminated transplant shock for me. Also, during flowering, when I've tried to use superthrive, my plants always go into shock.
But overall, my plants look about the same as SS's, that's how it goes with these lights, but with some practice and fine tuning the yield can be good.