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Inverted said:
Well you are right, but it's the hours that decrease, not the intensity.

If I were you, I would plug that bitch in, so that I can maximize what's left of that crop, but I would maybe cut the hours of light back to 11/13, stimulating the shortening days of autumn.

This is all personal speculation, with what knowledge of the Cannabis plant I have.

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Harry_Ba11sach said:
as the seasonal equator moves south towards the tropic of capricorn incoming solar radiation has to pass through considerably more atmosphere, which absorbs and scatters a higher proportion of the sunlight than during the summer when the sun is directly overhead

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81renaissance said:
I say nay to the plugging in of the light.
I don't think the daylight hours are an issue, but the position of the earth on its axis and the subsequent refraction of light as it passes through the atmosphere at a shallower angle weighs heavy in my opinion here. 
I think a sudden increase in lumens and light intensity could have adverse effects in terms of finishing time and/or possible hermaphroditism.

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Inverted said:
I really don't think they would herm.

What about when I took my female that was 4 weeks into flowering under only a 175w MH and I put her outside to face the sun which is stronger than a 1000w HPS... Well I'll tell you what happened, nothing but good things.  She took a few days to get over the hardening but after that she took right the fuck off in terms of budding.  I was able to get much harder and larger buds, not to mention everything sped along faster.

But you can look at it scientifically or play it by ear.  I prefer the latter.

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