As god wants blind understanding i gave it to him, hehe. I was so certain cause ive read it in van pattens grow bible :P But since ive seen some unexplainable necrosis lurking here and there ive made up my mind and i did set the timer on 18/6 just a few minutes ago. THP is pretty much the best...
If you mean that the extra growth is not worth the extra money, yes then i guess youre right, but if you mean that they dont respond (well) to the extra lighttime then nah, wrong.
Im not sure what to think, but the leaves looks much like my neem-fried leaves on the moneyface plants i were growing, some pic can be seen in my growlog.