blackberry topping

Here we grow again, this seems to do well. Bury 8/25, sprout 8/28, week 0 was a success. Switched to 3 gallon grow bags for this batch, they are easier to manage than big ass-pots, full of miracle grow potting soil. I'm going to see what happens with Walmart garden center supplies for the most part, tomato plant food for nitrogen and a bloom mix for flowering. I started with a "1200" light that draws 235w with the cooling fans and added a thin aluminum "1000" full spectrum at 100w and 5 side lights that draw under 20w each off Amazon. I have right at 600w total from the socket in led light. I intend to top this and otherwise use little technique beyond picking off really large leaves and bending stalks away from each other