I was always under the assumption that there was a switch to change it from veg to flower, I have two g8led 900 lights, ive read that adding a flowering 90 watt ufo (which I do have also) will make them think its time for them to flower, but is there a switch somewhere to change it, or is it an all in one and by adding the ufo, I can tell it to go into flower whenever I want it to? Im confused and was just hoping that someone knows more about this and help explain it, so I can understand it better, thanks