Wondering if this light burn running a 1000w led i...

Hey Growmie, Its not the light at all, you have a ph issue. pH imbalances, can also lead to nutrient deficiencies and other growth issues. I noticed your pH is 5.8 try going up to 6.0 and also make sure whatever your using to check pH is accurate and calibrated.

I would go with Organoman on this plus the fact that your substrate needs perlite or similar to keep it aerated, a ratio of 70% coco coir and 30% perlite is a good start for next time, Good luck 🤞🍀♥️

Boa man, isso parece sser overfert Man, como está o cronograma de fert e rega

It may be called a "Heargrow 1000W", but its actual output is only 100 watts of light........so no, it is not light burn. It looks more like a pH or nutrition issue. Your diary is not filled out very well and is missing a lot of information that could help pinpoint the real causes.