Theories based on some knowledge is fine -- that's how we learn about new techniques. The biggest problem I see with this theory, however, is that -- even under the best of conditions for indoor grows and even with plenty of HID lighting -- lumens are ALREADY less than an overcast or cloudy day. So the lumens you can get to your plants with ALL of your HID lights on are less than the lumens they would receive on just a normal, partly cloudy day outside. So, ANY reduction in lighting seems to be a bad choice to me. And if you continue this while your plants are in flower, be careful of foliar feeding. This can lead to mold and it can also result in an unpleasant residue on plants that you end up smoking because it is difficult to wash off. Plain water might be OK, but then you raise humidity and you normally want low humidity for plants in flower. As for the fan, my sense is that most experienced growers have one of those going all the time anyway.
So thanks for the replies . PEACE
