First time growing

Since July 14. Now im only using the snoop's premium nutrients bloom. At the end of the week 6 the EC was 1.8, so now they are on 1.9, following the recommendation of the snoop's premium nutrients bloom (you can see it in the pictures of week 5). No more Genesis, it was just for the beginning (week 5 and 6). July 16: i added the TGL 60 4k. The plant with the arrows pointing (one of the syrup) dont stop getting taller, her top leaf have some little ligth burn, so i put the ligth far away from the plant, but she keep growing, and the plants in the right side are shorter. So i put the TGL 60 in the right side with less distance between the plant and the ligth. As this lamps don't increase the ambiental temperature, it's not a problem having more watts. I mean, we are in summer with 30-36 Celsius degrees and the temperature inside the indoor is not more than 26-26,8 in the hottest days. In others weeks i been saying that i will do another diarie for the plants which are one week younger, but im lazy and i edited this diare. The plants that you see in the first week's are only the Lemons. The others plants are one week younger. July 18: i turned off the TGL 60, you can see the reason in my last question. Now they just have the led TGL 220 citizen. I think that turned off the TGL 60 is enough, but i will appreciate any advice 😊 (by the way, the humidity and temperature were ok, same with EC and PH, at least i think that it's ok, so the only posible answer for me is the extra ligth). But it's weird that only 2 of 8 plants shows this sintoms, also the second picture (in my last question) is of a bud that was pretty far of the ligth. July 20: i turned on the TGL 60, but how can you see, i increase the distance between the plants and the ligth.