I switched tko 12/12 about 3 days ago and have no signs of flowers yet. I have found my thrips were'nt under control as I'd like and am going to try some plant vitality plus tonight. I was considering switching back to 18/6 for a week or so to try to relieve some stress. Any thoughts? Is this going to just create more stress? Some of my older middle fan leaves are crispy at the edges...