HELP cant slove problem

Do you have extractor fan in tent ? Looks like heat stress , is there a picture of the whole plant ?

And so Light burn is easily identified with daily checks and corrected with mfg suggested spacing - you could use a ppfd app on your phone to measure safe distance to prevent burns as well. However your leaves look like they may be suffering from a Potassium deficiency and/or a ph issue - clues in what is really happening would be in where the issue is spotted (new leaves at the top or older leaves at the bottom of the plant) and ph measurements in runoff and/or with a soil meter. Once correctly diagnosed you can treat to eliminate the issue from re-occurring.

Check runoff ppms, see if their 300ppm more coming out then going in. If so you need to flush. It could be a build up of nitrogen. Also could be lack of it so if ppms are 200ppms less then going in then add more, but when adding more make sure to wster until 20% runoff.. Regarding the lights, it very well could be just good Ole light burn. If these are coming from the top of the plant it is light burn. Raise your light or back of power slightly or both. First check ppms, see if you are within range or have a deficiency or buildup, as I mentioned how to before. If all good then it's your lights. Just back them off a little or raise. Please select me as the answer so I could be entered to win the grower of the month contest. I would great appreciate it, hope I helped ease your mind regardless. Start with ppms, then move light if necessary. Have a good day 😊

This is light stress or burn. The light is too intense.

looks like trace element issue, which is more oftne caused by a pH imblance than an actual lack of that molecule being available. if pH is fine, this wouldn't be the issue. if soil, the soil should have it, if soilless/hydro, your soilless/hydro nutes should always come with trace elements included, or else you shouldn't buy that brand anymore. also, pH should never drift.. it should be a rare, unusual occurence that catches you by surprise.. so if pH drifts, also buy better/different fertilizer (soilless context, not soil.,.. microbes in soil should help maintain it. if these were near the top, could be light damage too. the zeus pro is a strong light. it's probably designed to power a garden with elevated co2 levels, so you'll need to use it less than 100% or greater distance from canopy than normal. cover more space or save some money... win-win choices. bunch of maybevs here.. so you'll have to deduce what's going on with the details not given.

I have couple friends having zeus, was thinking 8nto buying one 1000w myself. Bone has problems . To me personally it looks like N toxicity, maybe you feed too much.

Yeah, what does JUNGLE_B4RNS say looks like light burn but is weird they don't close up

Your light is too close and/or too intense It is called Photoinhibition See here to understand : https://en.m.wikipedia.org/wiki/Photoinhibition