THCFarmer.com
121,111 Members Log In Register
Log In Register

help with possible magnesium deficiency

  • Thread starter Thread starter jjtrain
  • Start date Start date
  • Tagged users Tagged users None

help with possible magnesium deficiency

jjtrain 7 Replies 538 Views
Page 1 of 1 · Replies 1–8 of 8
1
jjtrain

jjtrain

Posts
30
Reactions
18
Joined
Nov 18, 2021
Points
8
#1
my crop is week 3 flower and things are slowly turning lime green as per chatgpt it's mag deficiency. can anyone chime in? I do have calmag in my feed. I've heard that more cal mag is required in led set ups , is this true?

feed feed water
27-28c
ph 6.1-6.5
medium is pro mix
gavita 1700
flower feed is hygrozyme A+B , calmag , grotek monster bloom, advance nutrients big bud powder
Help with possible magnesium deficiency
 
#2
Yes but.

With the tacoing of the leaves may suggest you check your light strength.
If nothing 8 inches down is tacoing it's the lights beating up the leafs.
Quickest fix is Epsom salts via roots if you do not need the calcium of cal mag
 
#3
JIMKSI64 said:
Yes but.

With the tacoing of the leaves may suggest you check your light strength.
If nothing 8 inches down is tacoing it's the lights beating up the leafs.
Quickest fix is Epsom salts via roots if you do not need the calcium of cal mag
Click to expand...
thank you for the reply , doing a bit more digging and I got a feeling my pH run off is too low which is locking out mag. would that make sense?
 
#4
this is what I have for my run off week 3 flower based on those figures I would say the mag is definitely being locked out?
ec 1.7
ppm 900
ph 5.5
 
#5
The runoff EC without the input EC is not helpful. Each tells you what is going on. Reduction is good going up is bad and there are specific things you need to do in each case.
If you need some help on steering EC in a grow I can provide links and such. There are different actions to take when goes up and down and EC drops or rises.
In addition the majority of the nutes you are using have established cannabis feed charts available online. You are doubling up on bloom and to see how bad it is look to see the feed chart and what the NPK is of each of them and the amount
Now it's just math. Are you double or triple the PK requirements for cannabis.
I got no problem with multiple bottles but there are still limits to what a plant can absorb.
Good luck.
Ps never got an answer if the tacoing went lower than 8 inches down.
 
#6
JIMKSI64 said:
The runoff EC without the input EC is not helpful. Each tells you what is going on. Reduction is good going up is bad and there are specific things you need to do in each case.
If you need some help on steering EC in a grow I can provide links and such. There are different actions to take when goes up and down and EC drops or rises.
In addition the majority of the nutes you are using have established cannabis feed charts available online. You are doubling up on bloom and to see how bad it is look to see the feed chart and what the NPK is of each of them and the amount
Now it's just math. Are you double or triple the PK requirements for cannabis.
I got no problem with multiple bottles but there are still limits to what a plant can absorb.
Good luck.
Ps never got an answer if the tacoing went lower than 8 inches down.
Click to expand...
sorry there is no tacoing with the bottom leaves I've raised my lights.
current feed 1390 ppm
ec 2.8
 
#7
So plant using nutes and ppm dropping as expected. No leaf issues on lowers like tacoing. Now do you see the same intervein issues on the lower that we see on the upper. Every top not just pictured. Just the new growth whole plant.
 
#8
I do not , lowers seen fine, all tops affected. new growth seems fine
1000129595
 

Attachments

  • PXL_20251023_201429062.MP.jpg
    PXL_20251023_201429062.MP.jpg
    155.5 KB · Views: 1
  • PXL_20251023_201325792.MP.jpg
    PXL_20251023_201325792.MP.jpg
    137.3 KB · Views: 1
Page 1 of 1 · Replies 1–8 of 8
1
Back
Top Bottom