These may be of help, but you may already have seen them,
i know its a far red thread but they got far red words in them
if you can fade in the far red and then a bit of green to simulate the day break then use your normal lighting, then fade out the green then far red to simulate bed time,after/during lights out, (and pulse duration) it can trigger dna stuff that can then alter the total grow/flower time, may reduce the yield as well, may not, it don't seem to make any difference to the ruderalis lot, but their just stubborn.
and the super small Durban grew 5mm yesterday since i disconnected the earth plate, it'll soon be 2" tall after 6wk. not bad if i say so myself