Does someone know what’s wrong with my plants? They are all slightly curling and yellow around the edges! I have my light 12 in above canopy

Makes me think light burn since it's only the top part of the plant

Try backing off on the blood meal, its very hot. That might help.

Thinking maybe light burn. If the led is a vs1000 it should be about 18 inches above the canopy during veg. I'm not familiar with your nutrient mix but your feed schedule does not seem overly aggressive. I would raise the light to 18 inches and give them and extra feeding instead of water a few times and see what happens.

I’m using a 1,000 watt Vivosun led!

What kind of light and has it been that close the whole time?

You may have some light burn. I have a 600w and it needs to be at least 12-18 inches away or the plants freeze and stress. I almost lost my blue haze when I flipped. it froze for four weeks. Too much heat, too much light, I can't say but if all your plants did it at the same time it would indicate something the grower did. The question is what did you change????

You probably know the answer, you just don't know it yet.

A little more info would help figure out the issue. With more knowledge of the environment including nutrition, soil, ph, ppm, temps and humidity we are just tossing possibilities out. I look at the plant and without more info I think two issues, light stress and zinc deficiency. But again that's a poke in the wind. If you can't get things like ph/ppm intake and of medium I'd suggest flushing, restart the nutrients more balanced and raise the light a little.

I'm going to guess nitrogen. What are you feeding? They have ALOT of foliage in there. You might want to thin them out and the plant wont have as much to supply. Or bump up your nutes depending on what your using. Good Growing.