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sweet. check out that light hog in the center.
Something changed here. To be clear, I'm referring to post #328
It was just a small space heater for 30 bucks. Set it to 1000 watts and half way up. It will make your power bill jump, especially if you have to use 1500 watt setting. That's why I'll be taking a break when this grow ends, just till March
photosynthesis shuts downs at around 55-60F or 13C-ish.
Any colder than that, your plants will not only cease photosynthesis, but they will also suffer from stunted growth, or die.
As for temp affecting yield, colder air slows down the gas exchanging process so harvests will take longer in cooler temps.
Another fun fact, the temperature differences between night and day also have a profound effect on node spacing!
I believe i have read that if it gets cold enough then yes it can effect your harvest.......i think it would kind of stunt and slow down the process.....now i may be wrong but i am pretty sure that i also read not to let temps get below 60 or 15.6c for you.....me personally i would definately add heat to keep above 15celcius.....hope this helps and maybe some others can verify what i am saying
photosynthesis shuts downs at around 55-60F or 13C-ish.
Any colder than that, your plants will not only cease photosynthesis, but they will also suffer from stunted growth, or die.
As for temp affecting yield, colder air slows down the gas exchanging process so harvests will take longer in cooler temps.
Another fun fact, the temperature differences between night and day also have a profound effect on node spacing!
the only reason there could be for buds "hardening" due to cold weather, would be the plants natural instinct to trap as much warm air/heat as possible to allow it to survive the night. During the day however, they would just fluff back out to normal when the heat returned.
Would be an interesting science experiment for sure.
Maybe the winter crops could be selected on ability to endure cold temps... Summin that was once growing wild, at Altitude.. Where the thin air holds less heat...
I would lights on at night, heat for girls and hens.. Then have a thermostatic controlled greenhouse heater... Set to kick in if temps drop...
Hope weather being kind at the mo mate, batten down the hatches !!!!
I was also under that impression. Over my last 5 years of growing I have had cooler than perfect night time temps but never anything below 18C. Last grow which was a monster harvest had a constant temperature of 25C day and night.
I have also heard / read that low temps during flowering can increase thc production (I dare say nominally) and also bring out some great colours in the buds and leaves.
I think it's looking like heater on lol