No offense but actually it is not solid information. The spectrum of light does not determine or make the plant switch to flower, nor does it affect how fast or slow a plant flowers, it is the LENGTH of time the lights stay on.
It makes no difference if your using a MH or HPS as far as triggering flower goes.
The light spectrum does however affect plant growth, it just is not the determining factor of when your plants flower, as mentioned the length of daylight hours triggers flowering.
I am very precise with my use of language, and this is an example of how assuming you know what I'm saying without a careful read can get you in trouble. What I said was, '...
one signal the plants depend on is a change in spectrum...' I did NOT say it was the determining factor, I said it was one signal, a contributing factor if you like.
Of course Cannabis is dependent on photoperiod to flower- but even here you got it backwards, bro; the plant doesn't care how long daylight is, it only keeps track of how long NIGHT TIME lasts. This is why people can grow good weed with 8, 10, or even 16 hours of daylight, as long as they still get their 11 hours or more of uninterrupted darkness. What changes between these scenarios? Yields and quality. How does one do it? Get a high quality cycle timer with a large enough periodicity range. Sentinel makes several.
The practice of pushing plants into a desired phase of growth involves many factors. You can be ham-fisted about it, or you can carefully build up all the appropriate conditions and watch the plant reward you with highly desireable growth.
