First Grow ever. What should i do? Strain: Tropicozz (Perfect tree)

Too hot and too moist ? The ph could be low

don't keep the soil saturated all the time. The plant doesn't have enough roots to take it up so it sits in the water sits in the soil and prevents oxygen from getting in to the roots. 30c is too high if you aren't running co2. After 84F your plants will spend all their energy trying to stay cool with constant transpiration which impacts growth rate. In fact you can burn your plants with nutrients because the plant is absorbing too much too fast to try and stay cool. 25c is about as high as you wanna go on the temp scale. Humidity is good. pH to 6.2 and allow that soil to dry out so the pot feels light, but not to the point that it will wilt. Do that and she'll roar right along. 👉💪👈

30 c is too warm. This is likely from transplant shock.

To me it looks like nutrient burn. My plant has one leaf affected and it looked at first very much like yours, now all light green patches turned yellow. Grow mix contains nutrients. If you transplanted your plant from coco, it's possible that plant couldn't handle gracefully such sudden change. In my experience vitamins usually lower pH of the water. I would lower temperature - or at least took took the plant out of tent and leave on open air for a couple of hours. 30% is too much even for big plant, yours is small. P.S.: I am not an expert

ignore the blotches of different color - that's not nute-related. However, the burnt serated tips are a sign of some unhappiness. Unfortunately more than one nthing is possible to cause this... P-tox, K-tox or deficiency (funny, huh?), S-tox... grow mix? any idea of what ratio and concentration of nutes it added? this would help a lot. Easy to rule out pH... test it.. (though do realize this is as much art as anythign else... what runs out the bottom of the pot is not exactly representative of what the pot's pH is.) but, if you irrigate and fertigate at the right pH it should be fine. just in case.. do allow some minimum wet-dry cycle to occur before watering entire volume of the pot.. never water a portion. this makes the top wetter than the bottom and you promote superficail roots as well as creating a disaease vector as well as pest vector. let top layer dry.. if coco just let it change color.. if soil, let 1/2-1" dry before irrigating again. Not knowing if soills or soil makes a big difference in what you specifically do day-to-day, but over time they both have to average out to match plant metabolism. soilless/hydro is much easier to diagnose because you *can know exactly what you have given to the plant in regard to nutes... there is no unknown unless too lazy to track it, which would be a self-inflicted choice.