Update: Dead plant

Gotta grow - Brooooo those nutrients aren’t wrong. Sure the grow big is a bit much. Frankly I’d run grow big lower maybe around 10 ml/gal and keep that big bloom at 30ml/gal NOT ALL NUTRIENTS FALL UNDER THESE RATIOS. Grow big is 6-4-4 and big bloom is 0-0.5-0.7. Please double check what you’re saying before posting shit

OOO.. and your nutrients are way off if they right. You have ratios backwards. Grow 3 parts to 1 part bloom in veg so 3Ml/l grow to 1ml/l bloom that's just a example. Really you need to run of ppm not ml/L. They are always way to high and for the stage you are in. Your PPM shouldn't be hitting over 400ppm .08EC (ambient tap not included) . And flip that after you come out of pre flower.. for the pre flower stage ml/ml. Is normal for them products..as your still in a big stage of grow. But, you need to lower your PPM/EC with that Ml/L you must be batting 1000+.. way to high for a young plant. Good growing

That's not dead. Its needs Epsom salt. Mag/sulphate. It'll be your quickest fix. Let your soil dry out. Well tbh. The droopyness is either overwatering or under. My guess is over. As she's very very green. And if she was thirsty you'd have your plant eating leafs. So, mag..if you get Epsom salt make sure its pure. No mentol/lavender. And pull back on feeding. Let the top soil dry out. Your roots need to breath also. Your drowning her. She's gasping for air buddy. Hence been droopy. Good growing

Oh and download tent buddy, it has a VPD calculator and PPFD and DLI calculator and that will bring you im to the parameters you need with your temp and RH and light amounts

If you're referring to the plant in the pic it isn't dead... you need to get a better water schedule either your water to much or to little your light is on for way to long 18/6 is all is all ya need for a autoflower and yes your humidity and heat is off, 27C and 40Rh is 2.14 VPD and you're way off the charts for stress zone in the veg stage, you should be .80 to .95 you need to at 23c and 70% Rh to be at 0.84 VPD...Those are the parameters that tell your plant to breath and drink.. you fix those and your plant will bounce back weed is a hardy plant and can take alot of abuse The spots are early sign if sulfur deficiency Flush your plant and reapply accurate, balanced nutrients Before adding supplements to a plant's root zone, check the pH level of both the soil and/or the water solution (especially hydroponics) for plants. If the pH is high then it can be helpful to buy and carefully use a sulfuric acid-based fertilizer to both re-introduce sulfur, as well as bring down pH levels. If pH is within a normal growing range (5.5 to 7.0) then using Epsom salts would be a good source of sulfur for watering/hydroponics. In soil-based grows or outdoor grows the use of gypsum is good for sulfur introduction, but you may also use sulfate-based fertilizers such as ammonium sulfate or calcium sulfate, among others. If you have access, manure could be a great organic option as well.