Newbie needs help!!! One plant is dying...

Hey gang,

I recently set up a closet grow room. It's a small area. I'm using 150w HPS with a DWC set up.
I planted Bubble gum and one plant just took off. It was 4x the size of all the other ones. And now, it's having major problems.
At first, the leaves started to curl. Thinking it was a magnesium deficiency, I foliar sprayed it with epsom salts. That just made it droop.
Now it's turning yellow and the leaves are drooping and curling all over the place.
I was running it at a 6.5ph level and just recently lowered it to a 5.5 ph. I'm using the 3-2-1 Flora series and have it mixed for vegetative growth. This morning the TDS read at 1350ppm.
The other plants seem to be ok with slight curling as you can see in the pics.
What is the cause of my plant dying? In my DWC bucket I had the water level 1" above the bottom of the net bucket. Is it being overwatered? Am I burning it with nutes?
Down below, I'm growing some lowrider x blueberry in rockwool in a kitty litter box. The plants are really healthy and growing well.

I need some help!!!

Here are the pics...

Thanks guys,

Mauisurfer

I had thought that posting my problem on this message board would help. Why is everyone blowing me off? I took the time to describe everything as well as I could. I took pics of the plants.
Help a newbie, please!!!!!! :confused:

EASY KILLER.. EASY...

interestinig that it is that one plant that is so bad.. Can we see the roots..? there is a chance that the resivoir got warm an d the roots are rotting.. although unlikely this early in its life...

It does not look like nut burn... although 1350 seemms high for such small, young plants.. unless your fert is weak, that is HIGH!!

actually, I just looked at all your plants and none of them are doing well.... you need to clean out the resivoir... and refill it.... set PH at 6.5-7 and ppm at 600... If you can use distilled water....
this wil give your plants to recouperate from whatever they are going through... If it is not root rot, they will be fine in 3-7 days and you can increase the ppm to 1000...


deep breath

i love you

Thanks man.

I looked a little closer at the plant and right where the stalk goes into the rockwool it has turned black and really thin. A few weeks ago I dropped something on it, but it didn't seem to hurt it at the time. I guess it did. It's just about dead now.

Thanks for the advice. That's exactly what I did before I read your reply. I went to distilled water, 5.8ph, 480ppm. I'm using gh flora series and went with a 1/4 solution. The other plants have perked up nicely and aren't curling under anymore.

It's good you got your PH down. If not dropping something on it it may be the rockwool staying too wet. At least the rest are alright.

i read something in a high times last week about a disease that cannabis plants get right at soil line and it can kill the plant. now im not an expert but maybe i can help let me try to find the HT. brb

ok found it. its in the nov 05 HT. pg 72. its called Damping-off. its says once it starts its there for good. you need to kill the infected plant and clean the entire room and all the supplies. its caused by soggy medium. i dont know if im right ( doubt it) but i tried to help.

You Cats are the coolest! No shit fo real..Out of so many threads I have read, this one has the best , no bullshit info I have heard! I can relate to the pix as...as my project has very similar symptoms. hahahahaa....I got nothin'......