Leafs curling down

georgeforeman

Well-Known Member

• Nov 12, 2011

• #1

I have some leafs curling down on all my plants. For leaves close the to light and leaves far from the light. I am thinking low humidity

temp 83
rh 45
ppm 500 (.5 ec conversion)

 

georgeforeman

Well-Known Member

• Nov 12, 2011

• #2

it is hydro, undercurrent with botanicare pbp. Plants are 10 days into flower on half grow, half bloom nutes. Roots all look great

 

cowell

Well-Known Member

• Nov 12, 2011

• #3

What's the temp of your res?
Do you have an airstone going in it?
They looked at first glace to be in need of water.. but I checked your other posts and see you're doing DWC so that shouldn't be an issue.
Only thing I can think of that would be an issue is lack of oxygen in the water - either due to lack of airstone in the res, OR temp of the res. Higher temps hold less oxygen.
I have grown DWC for a few years, so I'll help if I can.

RH is fine at 45... higher is better, but I had 40% at my last house and never had any problems.
PPM is good... 500 is fairly light.
and 83 degrees is good... (90+ would be something to worry about).

 

cowell

Well-Known Member

• Nov 12, 2011

• #4

georgeforeman said:

it is hydro, undercurrent with botanicare pbp. Plants are 10 days into flower on half grow, half bloom nutes. Roots all look great

Click to expand...

At 10 days of flower - you should still be feeding veg nutes. Try it out your next time around..(too late to bother this time). keep veg nutes going for first few weeks of flower to give it enough N for the initial stretch... you'll see the difference next harvest if you give that a shot too.

when I see flimsy leaves - I automatically think "thirsty"...
RH is another cause of leaf droop - but you have higher RH than I've grown in for the past 2 years... and I didn't have that happen to any of my plants.

 

georgeforeman

Well-Known Member

• Nov 12, 2011

• #5

res temps are 70 with beneficial tea. (based on Heisenberg's slime thread)
large airstone with each plant and diffuser in epi center
I am running co2
-side not...sprayed with dutch master liquid light 2 days ago at bottle strength

I have been thinking of adding a second airstone in each res. The res are really wide and the stone is in the middle so all the floating roots that spread out do not get much bubbles.

 

cowell

Well-Known Member

• Nov 12, 2011

• #6

70 degrees is a little too hot. Try adding a frozen water bottle to the res to lower it into the 60's... (65 would be about right)

Anytime you add something new into the mix, after 3 days you will see the effect in plants. You over nute, you see burn in 3 days. You fix a problem, give it a few days too.
So the dutch master MAY be the problem..... but not familiar with the product, and never used it myself.

 

georgeforeman

Well-Known Member

• Nov 12, 2011

• #7

thanks for your advice cowell, but i cannot lower my temps that low because the benes will not thrive. I use the tea to get rid of pathogens, fungus, slime, and rot. Without it, my roots will get crushed because the pathogens thrive at temps below 67
https://www.rollitup.org/dwc-bubbleponics/361430-dwc-root-slime-cure-aka.html

 

neved

Well-Known Member

• Nov 13, 2011

• #8

Hey bro...
I had this prb ...U used different nut and ASAP flush your plants and start with middle nuts...
One of NPK is wrong I think your P gonna too high ....
best wishes

 

georgeforeman

Well-Known Member

• Nov 13, 2011

• #9

I am using botanicare pbp grow and bloom. I doubt my P is too high. I have used them nutes for 1 year and have never seen this. This is my first run with uc and liquid light