just when I think I got under control

New problems. I have what appears to be tacos at the top part of plant. Followed by some dark green leaves with small yellow spots halfway up plant. Then some burnt tips at the bottom leaves.

Room is 75 degrees.
45% humidity
15 inches or so in veg.
Ph 5.8
Floraduo at 1200ppm.
180 watt led ufo

I'm not sure what to do and need advise. I think the taco is watering or light to close. Dark leaves and tiny yellow spots may be nutes. Oh and roots are beautiful white and fill almost the bottom half of the 3 gallon bucket

Any advise is help full. I did pull the light up two feet above top. But the led doesn't get hot.

@Diabolical666 hahahah I'm sorry nizzle but help homie

Yellow spots are micro-nutrient defs. The curling of the s is likely a humidity issue (too low? I believe.) Your plant looks fine.

Curling up usually means a bit to much heat. But they generally look healthy. I'd add a little more cal mag for what's on the big leaf is surely.

Get some ground beef and carnitas where gonna have ourselfs some good old fasion tacos for dinner!!

Youre burning your plants. The taco is from Mg, in the 2nd picture you can see interveinal chlorosis. The dark green leaves are nitrogen toxicity.

When you set your PH to 5.8 does it drop? If so you're definitely overfeeding and locking out Mg (available 5.8-6.1 and on but you dont want to go past 6.1)

1200ppm is a lot of feed, but since you didn't attach it to a scale who the fuck knows what it is. EC people. EC EC EC EC ECECECECECEC!

Less is more in hydro, especially DWC. I did not go past 600ppm (500 scale) or 1.2EC my entire grow.