I really think the artificial light has a great deal to do with it. I have a "spare" Mano and a Victorian Dwarf growing in the garden window, and they are quite spindly as compared with the ones under the HPS light, even though I run the light only 3 hours per day.
I wish Taryn was closer as I will be dumping both of these backups in the trash now that the ones in the InnTainer are doing well.
Raybo