Bruce Banner Auto Herbie Seeds

Could be ph, could be a bit over feed with what you added on day 11 depending what was already in the medium as others said. Plant as a whole looks a little light colored and with the tips yellowing, what's your par/ppfd reading? I see you are running 20 hrs of light and if you are following a manufacturer recommendation on hanging height, that is set for 18hrs. The length of time the light is on is not as important as the amount it is getting (DLI) . However some run 24 hrs of light, but plants need rest too so I wouldnt run 24/0. 18/6 is optimal if you have the correct DLI, and will save energy on the power bill. The spacing looks a little stacked, but not bad, so I wonder about too much light as well as ph or over feed. Just my thoughts, Best of luck! Happy Growing!

more than one thing causes that, so you'll have to let it progress to better diagnose if you don't have familiarity with your formula/methods.

Yeah ph I'd kinda important I only use a liquid type test kit as the pens do my head in calibration every other day is a joke so get yourself 1 of those I use vitalink and it's cheap.. other than that it's hard to say but the plant is telling me she just wants water next few feeds and observe... Hope this helps and good luck..

CEC is important for understanding how to irrigate different soils. Soils with low CEC need frequent, short irrigation, while soils with high CEC need less frequent, longer irrigation. Organic matter has a very high CEC ranging from 250 to 400 meq/100 g. Because a higher CEC usually indicates more clay and organic matter is present in the soil, high CEC soils generally have greater water holding capacity than low CEC soils. Coco is around on average 80-100meq/100g Vermiculite or waterbeads for a simple solutions. Charged Biochar for the nuclear option. But do your homework if you do. Use biochar to increase water-holding capacity, prevent nutrient losses from fertilizers, and provide structure for the build-up of beneficial soil microorganisms. Again make sure to do homework before using tho as it can drastically alter ph if not charged prior to use. Good luck.

I found fabric pot are best i would concentrate of giving them same amount of water every other day like 1-2L depends on size and stage ,and then roots will just suck it up in no time ,hope thats help

A few factors at play with your watering frequency. Type of substrate and it's consistency play a role. Environment matters, aka a dry environment increases evaporation. The size and demands of the plant matter too. As others have said, watering in more slowly helps with escape from the sides. If growing in coco, increasing watering frequency helps too. Coco absorbs and moves water better when it's still wet and becomes hydrophobic if it dries too much.