The first two weeks in flower are known as transition weeks and this is when they stretch. I've heard the more nitrogen you give them in this stage the more they will stretch and if you cut it a little it will make stunt growth. I like a nice 1
1 NPK for this point so the plants can get whatever possible nutrient they need. You just have to add all the information up from your feed (each bottle should say the ratios of N-P-K). If one bottle is 5-0-1 and you use 5 ML of it in your batch then you have 25-0-5. If the other bottle is 0-5-4 and you use 5 ml of it then it is 0-25-20. When you add them together you get 25-25-25 or 1-1-1. It all depends on your nutrient line.
Skoondawgs plants really look healthy and green. Does he use my feed schedule? So far my photos have shown no signs of any issues so far so I am very happy with it. There are some good YouTube videos really explaining nutrients that are fun to watch and I learned a ton from them. It's eye opening looking at the bottles as just numbers and manipulating them to your advantage. The generic schedule on the bottle is usually not the way to maximize the plants. Did I answer your question?
I was thinking about chopping the Headlights today or tomorrow but so far just milky trichs and no amber. Probably will flush a few more days and pull her down this weekend. That is when the youngest girls will likely need up-potted anyways.