First grow need advice! Possible deficiency. Please help

J

Jmulls

New Member
So this is my first grow. Overall she has been healthy and happy, up until shortly after she finished stretching. Currently 5weeks into flower. This yellow brownish discoloration start on lower leaves first. Thought not much of it. It begin to happen on more leaves. So I did some research and thought it may have been a cal mag deficiency. Started adding cal mag. Now it has gotten worse and has moved towards the top more newer leaves. An advice please. Thanks!
 

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Ben123456733

Well-Known Member
How often have you been feeding her? If you've been feeding too much it may be nute lockout.
If your soil has way more than the plant can handle your plant will stop aborting nutrients completely until the soil is back to a healthy level for the plant
 
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Lowkeygardener

Well-Known Member
Check ph of your medium if you can. Looks like you might have salts built up. Needs to be within the 6.3-6.7 range for ph for optimal nutrient intake. I would flush it with a good amount of runoff to try and get any build up out.
 
J

Jmulls

New Member
Ben123456733 said:
How often have you been feeding her? If you've been feeding too much it may be nute lockout.
If your soil has way more than the plant can handle your plant will stop aborting nutrients completely until the soil is back to a healthy level for the plant
Click to expand...
It’s a DWC setup. I change out the nute water every 7-10 days. I use general hydro nuts. Mix it just like the bottle says for flowering stages
 
J

Jmulls

New Member
Lowkeygardener said:
Check ph of your medium if you can. Looks like you might have salts built up. Needs to be within the 6.3-6.7 range for ph for optimal nutrient intake. I would flush it with a good amount of runoff to try and get any build up out.
Click to expand...
It’s currently a DWC setup. I maintain the ph to around 6. Checking ph often. Would you recommend just flushing with only ph’d water?
 
Bushbaby11

Bushbaby11

Well-Known Member
Jmulls said:
So this is my first grow. Overall she has been healthy and happy, up until shortly after she finished stretching. Currently 5weeks into flower. This yellow brownish discoloration start on lower leaves first. Thought not much of it. It begin to happen on more leaves. So I did some research and thought it may have been a cal mag deficiency. Started adding cal mag. Now it has gotten worse and has moved towards the top more newer leaves. An advice please. Thanks!
Click to expand...
Calmag definitely.
Calmag is usually best taken up at 6.2 ph, what's your res temps?
Ec?
 
Failmore

Failmore

Well-Known Member
Claibrate your ph pen. Ph should be 6.2 in flower. I need to calibrate my pen once a month or it WILL be off.

I thought I had issues but my ph was 5.8 and I thought it was 6.2.

Issue will not look better. But not get worse once fixed.
 
J

Jmulls

New Member
Failmore said:
Claibrate your ph pen. Ph should be 6.2 in flower. I need to calibrate my pen once a month or it WILL be off.

I thought I had issues but my ph was 5.8 and I thought it was 6.2.

Issue will not look better. But not get worse once fixed.
Click to expand...
Is 6.2 for DWC?
 
Bushbaby11

Bushbaby11

Well-Known Member
Jmulls said:
Air temp 68-75
Res temp 68
I don’t have an ec meter. The ppm is 800
Thanks for the help I really appreciate the help
Click to expand...
I'm 90% sure it is calmag deficiency, up your ph to 6.2 and give it a few days see how she goes, 800ppm = 0.8ec ??

If so that's a little low, maybe up it to 1.2/1200ppm see how they go
 
J

Jmulls

New Member
Thanks for the advice. I’m going to mix new nutes tonight. And try to maintain a ph of 6.2. I’ll post back in a few days with an update. Thanks again
 
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