ILGM Bruce Banner - Indoor DWC LED

Week 5 from seed. Started LST on manifold. Manifold 4th node is just starting to come in. After the 5th node comes in, I will top to the 3rd node and remove the 2nd node. Roots from plant #1 beginning to tangle with the air line in the reservoir, which I was able to gently untangle. I'll need to do some research on how to avoid this, because lid/net pots will need to be removed for easier access to defoliate in the future. DWC hydro has been very low maintenance and much more enjoyable than soil for me. I haven't added any pH adjustment or nutrients for almost 2 weeks nor have I changed the nutrient solution within the first 5 weeks, and everything looking very healthy. Have had difficulty dialing in my light intensity and distance, which has previously led to light burn, leggy growth, and heat stress. Purchased a cheap light meter and will begin using this to set the light more consistently. Last week I was at 6k lumens, which I increased to 15k lumens at 21" as recommended on several forums for vegetative growth. I'll increase to around 45k at 18" for flowering. Some very minor tip burn was visible this week, which I'll keep an eye on; but 15k lumens seems to be the sweet spot for now.