Help! First time dwc hydro grow, think plant is dying

N

Newgrower2725

New Member
Hi, really need some help, the leaves on my one plant are all turning yellowish brown and curling downwards and dying while the other is incredibly green but I've fed them the exact same. Photo of my feed schedule and plants. Been feeding distilled water with 1/4 nutrients whenever bucket is low and then once a week I do full strength nutrients. Plants are roughly 5 weeks into flowerScreenshot_20210118-231559_Video Player.jpgScreenshot_20210118-231538_Video Player.jpgScreenshot_20210118-225702_Video Player.jpgScreenshot_20210118-225653_Video Player.jpgScreenshot_20201228-210508_Gallery.jpg
 
Need some info on environmental conditions.
What is the root condition of the affected plant?
Also, current ph and ppm reading on the sick bucket.
 
It's always at 38-42% humidity and 27-28 celcius during day and 24-25 celcius at night, in 4x4 grow tent. The roots seem to be slightly reddish but still healthy looking with no off smells coming from the reserve.Will take ph and ppm once the lights come back on, thanks for replying
 
Also, try to take pictures in normal light so we can see colors better.
Can you post pics of both plants for comparison?
The other thing I see is the low rh % creates high vpd in the plant.
That will really push water/nutes through the plant and can trigger some stress.
 
I took some pictures in normal light, increased the rh to 50% and flushed the one plant. I'm also having a problem with my air stone it's been swallowed up by the roots and I cant get it out, should I unplug the stuck air stone and run a new line+airstone? First time doing hydroponics dwc
 

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Probably just over fed the last month. Air stones get wrapped up in roots. Nothing you can do about that. Just leave it in there and plug another one in if ya wants too. But I’d suspect something up with the roots. Did this come up sudden or gradually?
 
I noticed the tips of both plants were starting to curl up and brown about a week and a half ago so I flushed both right away and then gave them a week of no nutes. This past sunday I gave them a full feeding and within 2 days majority of the leaves look pretty much dead on the one plant.
 
Newgrower2725 said:
I noticed the tips of both plants were starting to curl up and brown about a week and a half ago so I flushed both right away and then gave them a week of no nutes. This past sunday I gave them a full feeding and within 2 days majority of the leaves look pretty much dead on the one plant.
Click to expand...
Yikes a week with out food??? That’s not good. Then you hit them at full strength?? That’s also not good. Reduce the food by half.
 
GBAUTO said:
Need some info on environmental conditions.
What is the root condition of the affected plant?
Also, current ph and ppm reading on the sick bucket.
Click to expand...

28c is 82.4 degrees farenheit bro that's why you're plants are struggling. Gotta keep it low at 70, 74 degrees highest. Nugs look alright but 100% at those temps you have root rot causing all the stress. Throw a frozen 1liter in your reservoir everyday if you don't have a basement or chiller.
 
Newgrower2725 said:
Sorry i shouldve been more exact, 3 days no nutes 2 days 1/4 strength then a full strength
Click to expand...

This sounds like a guessing game to me. Why don't you keep the same nutrient strength at all times? Do you monitor pH and EC? Having a accurate pH and EC pen is crucial growing hydro.

Like other suggested your temps are to high for DWC or hydro overall IMO. Try lowering room temp to 24-25C.

Looks like a hydro grow when res has never been changed. You can top off forever and plants will survive, but it will be almost impossible to keep nutrient ratios optimal for weeks.

You have to do weekly res changes and top off in between. Cheers!
 
Last edited:
Running bubbler buckets with leds is a tough call.
leds need to run in the low 80's to achieve better growth.
Hydro systems should run in the upper 60's for best root health.
Without some means to remove heat that your buckets absorb from the tent environment, they will equalize at room temp.
Some folks get around this by running a sterile system, but you will get better growth from higher dissolved o2 in cooler solution.
If temp management is a no-go, then I'd suggest you look at using coco/dtw.
Almost the same growth rate as hydro, but it'll be better suited for a constant 28degC.
 
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