NFT hydro grow

This should get some tongues wagging.(Screw is only through one plant)..I see this screw through the the main stem idea on insta...I think RQSeeds posted it from someones diary and it's supposed to boost trichome production. I laughed and thought what a load of bollocks...So now i thought it's the last ten days or so for this one shiskaberry so why not give it ago. I don't know how i will be able to tell the difference as my plants are smothered in trichomes. The first 6 pictures are of the plant I have drove the screw through and as you can see they are already coated in trichomes already. Will I spot any difference? Who knows Have been flushing now for 10 days . The colour has dropped out the leaves on the middle plant which is a good sign...Just given them a water change . They have had 50ltrs of clean water. My tap water is so cold (7c) I fill up a clean plastic dustbin of water the day before so it will be room temp the next day as i dont want to shock my plants roots with stone cold water this is a hard plant to defoliate as I am damaging bud as I try