Feeded them daily for one week almost 1 l water with. The soil is orchid's mixed with vermiculite and coco's. The pH after adding all nuts is 6.8, sometimes I put a little bit of lemon juice to drop it. Yes they are not stretching that much anymore, like now they are almost 30 cm at week 13. They stretching like 2 a 3 cm each week. I use a lumatek pro 200 at distance 40 a 50 cm at 100%. I don't have a ppm meter, so couldn't measure it.

Need more intel.. Leaves look kinda droopy almost like overwatered, which also causes deficiencies. Are you in soil or coco? Guessing from other grow log probably coco, maybe? Reason I ask that is to rule out overwatering as I hear coco is nearly impossible to over water. I hear you want to run 20% runoff to wash out salt build up, I don't run coco but I'm sure someone will correct me or confirm. If it is soil you are running that may be an overwatering issue. 2nd question is the ph of water and of the nutrient solution. Asking to rule out the possibility of ph lockout. Next is what stage are your plants at. It looks like early flower from that pic, just want to confirm that. If that is the case have they finished up the stretch? Last question is what ppm are you feeding the girls, and how often? Just want to see if they are being over/under fed for the point they are at. Hope you get them sorted, and if you send some more info we may be able to help narrow it down for you. Good luck.

That's a beautiful project my brother, but she definitely getting some burn 🔥. Tapper back on nutes and you'll see her blow up. Good luck 👍

Hey guys, those buds are looking beautiful, but what I see is the tips of the leaves starting to burn and curling downwards, which could be over-fertilization. I recommend watering only with water at 256PPM and 6.3pH. How much water? ... Just enough for it to drain from the bottom. You'll measure the PPM of the water that comes out from the bottom of the pot, and if it's between 700PPM and 1300PPM, that's fine. If it's higher, then you have too many minerals in the substrate and you should water only with water again at the next watering; otherwise, increase the dose of P and K. You'll also measure the pH of the water that comes out from the bottom of the pot, and if it's high, then at the next watering you do it lower, and if it's low, you water with a higher one. With that technique, you'll know the PPM and pH values of your substrate.