I forgot to mention...a few months ago I stopped keeping the moms in the veg side of the cab and have them all in the cloning/seedling side of the cab under two 23w CFL's!
EDIT: I should also mention that the reason I made the move is that my Power Skunk and Big Band mom's, at different times, both went into flower under the GLR I use on the veg side, which coincidently, is also why those moms were started later - I had to restart them from clones when the moms flowered!
I switched the clone side to 20/4. I don't know why they started flowering using GLR, but I can only suspect that once the plants get very mature, they just want to flower and once GLR gets them to the brink, there's no stopping them!
Hmmm.... I've seen a little of this for GLR... was it a full flower or the faux flower that happens later in life? It seems I need to re-examine the usefulness of GLR for keeping mothers. It may be that for mother plants 18/6, or 20/4 would be better. Maybe GLR would work for preparing the clones only. I have had one of my mothers go into a light flower, she still grew as if vegging, but flowers started popping up in places. New growth kept coming out, but soon after grew flowers as well.