Help with gg4.

Very possible you are drowning the roots and not allowing them to get proper oxygen. This also creates lockouts and a ton of other problem. Note that the damaged leaves wont recover. Look for the new growth.
 
Very possible you are drowning the roots and not allowing them to get proper oxygen. This also creates lockouts and a ton of other problem. Note that the damaged leaves wont recover. Look for the new growth.
Took me a while to realize I was being to crazy w the watering. Still catch myself from time to time too! Lol.
 
Yeah, id back down on the watering but also that's a hot light that's CLOSE to your plants, id have it set a lot higher. like 30 inches plus. I have 2 seedlings in this stage that are thriving on a 1000watt led panel 32" above and they love the thing no stretching. And that 750HPS is a better light then what im doing so you should be fine :)
 
Yeah, id back down on the watering but also that's a hot light that's CLOSE to your plants, id have it set a lot higher. like 30 inches plus. I have 2 seedlings in this stage that are thriving on a 1000watt led panel 32" above and they love the thing no stretching. And that 750HPS is a better light then what im doing so you should be fine :)
That was my first guess. Light or nute burn. I don't have experience with HPS so I figured 2ft was decent. But that was an assumption. After looking at the picture again, I noticed the soil looked super wet for such a small plant. That led me to thinking he's drowning them too.
 
I’d recommend taking the guesswork out of it. A Lux meter (33 buck on Amazon) really comes in handy for determining how much HID light your plants are getting. I think your way too close. I just tested mine under 750 watts and I’d do 30 inches.

Dr.Meter LX1330B Digital Illuminance/Light Meter, 0 - 200,000 Lux Luxmeter https://www.amazon.com/dp/B005A0ETXY/ref=cm_sw_r_cp_tai_M0khEbJDSFPWV
 
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