Yeah, its best to run "MH" up till they start to flower. Then switch over bro.. that's what I have seen my Dad do in the past, and have herd of other growers doing it aswell.
Yeah, I start with a 400 watt HPS, then increase to a 600 watt middle flower, plus the 800 watt LED. Not to mention the CFL'S for bottom growth.
have you tried vegging under hps and then adding the mh for flower ?
i tested this with my leds have a bloom and a veg
seems to work well
havent tried it with real watts though
maybe i'll supplement the cool tube with some blue see how it works out
i like my auto's to stretch a bit and then tighten the nodes up towards the end
i havent found anything on it but i think the ruderalis likes the red and then more blue
been looking into russia/siberia weather/seasons but have found very little and even less
on ruderalis in nature you would think that since its been used in medicine for thousands
of years out there you could find more on it
but it grows wild so whats it matter i guess is the way they see it