dogsnova;1010844 said:Stretchtastic;1009624 said:Then why do all videos ever made say that you can use green lights during the dark cycle of flower without any problems?
They are wrong...LOL ..... Give it a try you will see.. If the green light is very faint then it will take a little longer to make your girls re-veg.. But using a green incandescent light bulb for instance, your girls will re-veg in a relatively short time.. Try it, but don't say I didn't warn ya..
Red light (630nm and above) and Far Red light (730nm and above) is the only two spectrum I recommend using during your girls dark time.. And NO you don't need a filter for these two spectrums.
Red light (620nm and higher) is SLOWER then SID (Standard Indoor Darkness). However only 15min of red light at a time will not slow your girls down that much (if at all). But if you have red light on more then 15min at a time during your flowering dark time you will notice a slow down in flowering time.. i.e. It will start to add days to your flowering time.. But they will not re-veg..
Far red (730nm and higher) on the other hand can be found in SOD (Standard Outdoor Darkness) every night all night long.. Outdoor darkness is faster then indoor darkness because of the Far Red spectrum (730nm and higher) that exist outdoors at night.. Far Red is one of mother natures tricks. She speeds up the darkness outdoors witch allows more daylight to be used.. i.e. Most girls (indica and sativa) grown outdoors will be in full bloom using aprox 13hrs of daylight.. As a mater of fact my indica strain will be in full bloom outdoors under a 13.5/10.5 flowering schedule.. If I try that 13.5/10.5 schedule indoors without a far red spectrum on during my dark time my indica girls will not flower..
So ya try green light, but I would make sure you filter out any spectrum coming from the light below 530nm.