I still can’t determine whether this is a heat r...

Hey there man! I think your baby might be suffering from more than one issue. First of all, what kind of soil are you using? Is it already fertilized? Also, do you think it has enough drainage? Those reasons alone could be causing all this! Also I think her leaves look a little too dark (could be the lights tho) and that might mean some nutrient burn. Try to double check your nutrient schedule and try follow it close/adapt it properly to the type of soil you're using. Besides both issues I think heat might be giving you some issues but mostly because it's making your plants drink more water/the water in the soil is evaporating too fast. If they were getting burnt the leave tips would be curling up and I don't think that's happening yet! If things continue without improving maybe a root flush could help... or maybe some seaweed nutrient to keep the roots happy! And don't forget to check your water TDS/pH! Cal-mag is great if your water lacks them... but unless you check it you might end feeding her something she might not need and that's never good! Good luck! 👊

Hi @alanwaters! What's the EC of your feedings? What's the temperature of your solution? Do you water until the runoff? Do you feed everytime you water? She looks a bit thirtsty/hot, so you could try to increase the frequency of your waterings, and you could also spray some fresh water in the early morning or when the light turns off, this will help us to remain fresh. A good airflow with a continuous slight breeze will also help cooling her down. I won't panic at this stage, this reaction is pretty normal considering your daily temps, she should get through this and will become more resistant as she expands. Hope this will help, keep us up-to-date and happy growing 👊

The high temps could have cause a stress so a difficulty to assimilate the nutrients but I don't think that heat alone did that , it is a combo between the high temps , the low RH and the lamps behing too close ( if 30cm is fit the led it could fit but clearly not for the Hps ) . So it looks like a light burn or a heat burn due to low RH, at that stage try to up your on if you can't low your temps 😊