5th week of flower, major droop

Hey guys,
I'm going crazy here trying to figure out what is going on. I have two babies in a DWC setup, one Super Skunk, one Yumbolt 47, at approx. 5th week of flower. The Y47 is doing great, but the SS started dropping lower leaves about the 3rd week and now what's left is drooping and looks like its dying. I know I let these veg way too long, I have no more room to raise my lights. I have two 1000W led, I am pumping Co2 up to 1500 ppm in every hour right after my exhaust fan turns off. I check the ph daily, humidity is about 60%, temps aren't extreme. I change water every week and am using GH trio nutrients with King Kola and Honey Chrome since I started flowering. I pushed both air stones under the roots, thought maybe not enough oxygen. I am clueless and hope somebody has an idea of what I am doing wrong. I just don't see how one is doing so well and one is choking out, exact same conditions. Looks like the first pic is the Y47, the other two are the SS. Anybody have any ideas, let me know, sux to get this far for this to happen.

Since I don't know much about led's and stifling tents, I can't put my finger on it. How's your ph and EC? I am scared to death of 60% humidity. If the air is 60 then inside the fat buds is 90%. It's so sad when the fattest prettiest ones go moldy.

Thanks for the reply natureboy. Man, these tents really are stifling! I'm lucky if I can get the humidity down to 60%! I bought two humidifiers, the first one couldn't touch the amount of water these two monsters are putting into the air. I have two fans as well keeping the air moving and I think that helps. I have been keeping my ph right around 6 and I'm not sure about the ec. I think I might have figured out what is going on tho. I read that certain strains are a lot more sensitive to the ppm in the water, and my ppm has been around 1700 ppm I think. The SS has just started getting really bad since I started adding the KK and Honey Chome so I added three gallons of distilled last night to dilute and I won't add that when I flush this weekend. See if I can get her to come back. Will keep posted, I might just do one strain at a time from now on.

Size of tent, actual wattage of lights, and light height?

1700 ppm? Yikes. That's double what I ever feed. That likely has something to do with it. Leaves are clawing. I'd cut back on the nute strength. It won't help the current damage but could keep it from spreading.

xtsho said:

1700 ppm? Yikes. That's double what I ever feed. That likely has something to do with it. Leaves are clawing. I'd cut back on the nute strength. It won't help the current damage but could keep it from spreading.

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Yeah good observation, what you said, thumbs up. I'd eliminate nutes all together for a few watering then.

Ok, just finished draining, flushing, and refilling my reservoir with distilled water. She still looks really bad but I am hoping that if I let her flush out for a couple days and then go maybe half strength on nutes she will spring back. Last time I try two different strains in the same system. My Y47 is growing like crazy too, already really sticky to the touch, almost wonder if I should sacrifice the one to keep the other blowing up. I don't think a couple day flush will have any negative effects on the Y47 either tho. Now just wait and see what happens.
Bignutes- my tent is 6X5X6.5, my lights from what I can gather are pulling 280 watts and 243 watts and are actually the 1500w models. I have the girls way too close to the lights since I ran out of room,(let them veg and didn't control them) but I keep them pulled away from directly under the lights. Only my first attempt, will learn from my mistakes. Let me know if anybody else has any ideas, you guys thing the SS will spring back enough to make it worth keeping her?

She looks so sad!

How are your roots and water temp? Any slimy or smelly roots? I'm not a hydro guy but Hydrogard can help root issues in DWC.

I use 2 ml of HGuard/gallon and no, the roots are nice and white and crisp. I'm pretty sure I over nuted the SS, I just hope she recovers