Could low humidity do this?

shiva71

shiva71

Well-Known Member
Hiya
My other thread has died so ill ask here - 6 wk old DP Strawberry Cough in DWC under basic 135w QB.
Temps, pH, normal, ppm is actually dropping 100 a day so shes feeding.
Overnight the damage spread a lot, and the only thing was different was that the humidity dropped pretty low, 35%. And when i crank up the RH to 70% or so she seems to like it.
So...could this damage be due to low humidity?
Cheers!
 

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THT

THT

Well-Known Member
^^ second that @bk78 if everything else is truly within normal range, Cal/Mag
double triple check PH and PPM, give that water a good stir.
 
shiva71

shiva71

Well-Known Member
24-28° or thereabouts.
Yeah ive been thinking all along it might be a deficiency. Gonna bump ppm up from 900 to 1100 and see what that does.
Will read up on VPD.
Thanks!
 
curious2garden

curious2garden

Well-Known Mod
Staff member
shiva71 said:
Hiya
My other thread has died so ill ask here - 6 wk old DP Strawberry Cough in DWC under basic 135w QB.
Temps, pH, normal, ppm is actually dropping 100 a day so shes feeding.
Overnight the damage spread a lot, and the only thing was different was that the humidity dropped pretty low, 35%. And when i crank up the RH to 70% or so she seems to like it.
So...could this damage be due to low humidity?
Cheers!
Click to expand...
Those punctate rust spots are a classic lack of Ca symptom. I run 10% humidity and my plants only do that when they need Calcium. I use General Hydroponics CaliMagic because I like the ratio of Mg to Ca. Good luck and nice grow so far.
 
shiva71

shiva71

Well-Known Member
Sweet that seems to have done the trick, ppm and pH stable :)
Put my scrog in last night shes looking ok to me...
Cheers guys yous the best!
IMG_20200521_182836345_HDR.jpg
 
shiva71

shiva71

Well-Known Member
KingQuazy said:
That scrog is awesome. I was wondering how I could avoid buying a net. Thank you for posting this picture!!! (Im gonna do mine with pvc frame)
Click to expand...
Cheers :) My first scrog, its kinda fun tucking and tying the tips down!
Yeah i just drilled holes 5cm apart and threaded some string through to make the net. If youre interested...?

Super simple scrog

Hiya Pics are self explanatory, i thought of a few ways to support the frame with something attached to the dwc lid but i imagined that would be a pain. 4 hooks in frame corners, clip onto string strung to tent poles. Great thing is i will be able to just slide it up when i need to remove the...
www.rollitup.org
 
shiva71

shiva71

Well-Known Member
Scrog update if anyones interested...she's not quite as evenly spread out as id like, need to fill the two nearest corners. There is some tip burn i think thats the nutes, im throwing a bit more at her than i probably should (ppm rising 60-80 over a day). Otherwise i think she looks great, hope it continues :)
IMG_20200529_135000686.jpg
 
2Hearts

2Hearts

Well-Known Member
Im still having problems following, was it not a humidity problem and that good grower who grows at low humidity just great right?
 
shiva71

shiva71

Well-Known Member
2Hearts said:
Im still having problems following, was it not a humidity problem and that good grower who grows at low humidity just great right?
Click to expand...
I think it was a few things, i moved her into my living room which had crazy low humidity (20%) which didnt help, plus cal def, she definitely improved with added CalMag as suggested by the guys here.
 
Cx2H

Cx2H

Well-Known Member
curious2garden said:
Those punctate rust spots are a classic lack of Ca symptom. I run 10% humidity and my plants only do that when they need Calcium. I use General Hydroponics CaliMagic because I like the ratio of Mg to Ca. Good luck and nice grow so far.
Click to expand...
Yeah. I'm in the same boat my RH is never above outside , between 10-20% and they grow just fine as long as I cover the basics.
 
curious2garden

curious2garden

Well-Known Mod
Staff member
Cx2H said:
Yeah. I'm in the same boat my RH is never above outside , between 10-20% and they grow just fine as long as I cover the basics.
Click to expand...
That's good to know. Few people live outside the VPD and during winter when I can get very close to good VPD parameters my plants look like beauty queens. But during my brutal summers I'm afraid my girls look a bit ratty. Doesn't seem to change the high at all.
 
bk78

bk78

Well-Known Member
curious2garden said:
That's good to know. Few people live outside the VPD and during winter when I can get very close to good VPD parameters my plants look like beauty queens. But during my brutal summers I'm afraid my girls look a bit ratty. Doesn't seem to change the high at all.
Click to expand...
I am the complete opposite. Winter I struggle hard to keep VPD in check, summer is a breeze.
 
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