The two most true points I've read so far are there are more opinions than people and most experienced grower left this site long ago... i was just searching for some molasses info but I'll throw my two cents in on the flushing situation. Flushing is necessary and not at the same time. If you haev been pumping 1500ppm into your plant form day one, flushing would be a useful thing at the end. If you have been feeding moderately, probably not as necessary. If you don't have a ppm meter like me, if your tips are brown, your ppm is too high. about 900-1000ppm is right, I feed daily in coco with about 900 and water till 15% runoff so you basically just have the same solution in there constantly. The runoff cleans and out the old and brings in the new plus you are oxygenating the roots with the new water. One thing flushing does accomplish is that it encourages your plants to fade, meaning it is using up nutes inside your plant. Sometimes drying is one of the hardest things to do and if you have faded your plants, there is less chance you will dry them too fast and lock "the green" in and have your three month project smell like hay. I can say with experiene, i have flushed for 17 days with no effect on the flowers swelling the last several weeks and I am more comfortable drying faded plants as temps/humidity vary throughout the year. So to say the plants get starved is incorrect. I have also not flushed at all and not seen chemically buds. If you can't decide what to do, I would drop the ppm way down the last two weeks and then flush for a couple days before harvesting. Most experiecned grower use molasses, i am on here trying to determine how to use tap and molasses as I do not RO my water. Some people say the molasses increases yield but its hard to say since the flowers swell the last two weeks anyway unless you are doing a side by side. My grow currently is experiencing some filling in issues so I am going to throw in some molasses just for the hell of it. I can also throw in an unrelated point and say feeding a GH lucas formula, it is possible to hit 1g/watt. you don't need any witchcraft products, proper training of the main branches and a good root system before 12/12 is the most important. Some people call lucas cutting corners, I call it.... how much more than a gram a watt are you getting? Same or less? Thats what I thought. Peace!
