Tin foil is not good as a reflector. Clay pots wick water out of the soil and leave fertilizer salts in the soil. Usually results in the grower getting nutrient lock out and root rot from having to water so often.
You've provided nothing but pics. How about nutes, medium, feeding schedule, age, pH and ppm, lights, temp, and humidity just to name a few.
i dont know ph. age is 1 month and 8 days . lights 150 w eco and 20 w for plants or something like d"T . i use black jack . and N. than i use organic .
The pH going in and coming out is the first and most important thing to know. If your pH is off it will lock out elements and cause any number of deficiencies. What water do you use and do you supplement with cal/mag?
You need to know your pH before you can determine anything. Either get the drops, the strips, or a meter. Keeping the pH in range is the most important thing for proper nutrient uptake.
Listen to Mick. The first year I grew I thought u can just feed them. WRONG! FIRST U PH. than when u feed u ph after mixing. I suggest u get on you tube and weed tube and put in how to grow weed. U will find days worth of info. If u dont want to learn. Than u will rarely get a plant to finish Sent from my SM-G935T using Tapatalk
What size is that pot it's in? looks like on top of needing to be ph'd and a lot of perlite added, it's getting root bound. I'm not a soil grower but she looks stunted in growth big time.