I'll pop in and follow along! I'm liking the setup, and nice ingenuity on the BACF mounting!
It looks to me as though your plants could use a little food. They're pulling nutrients from those lower leaves to support the top growth. I saw that you're using 10-10-10 fertilizer, which might work if used correctly, but isn't the best for cannabis. I'd highly recommend getting some proper nutrients to make life easier. You can use hydro or soil nutrients, in liquid or solid form. I tried going organic for my first grow, but I had so many other issues to worry about (pH, temperature, nutrient deficiencies, etc) that I defaulted to a 3-part hydro nute line. They were about $15 per bottle, so for $45, I was able to have MANY successful grows. There are also liquid organic nutes that you could use, just to simplify things. You can find them all online or at a local hydro store (I'd recommend General Hydroponics, General Organics (both 3-part systems) or Dyna-Gro (2-part)) if you want to go that route. Otherwise you can head down to a big box store and get some organic stuff. Fish emulsion and kelp products are good for vegetative growth, or you could even get some Espoma or Jobes fertilizers (something along the lines of "plant-tone" for veg and "flower-tone" for flowering).
You just want something high in nitrogen for vegetative growth (like 5-2-3) and something high in PK for flowering (like 1-5-5). Then you have to make sure you are getting all your trace minerals (many of these products should have a decent amount). You can see why I went the hydro direction now.. It can all get complicated fast.
I'm just trying to help because I can see you're having a bit of a fuss with these plants. I think if you give them what they want, you'll see an explosion in growth. Hopefully you take this all as friendly advice! Keep up the good work!