Deficiency or Lockout? Help needed...

Could you shoot me a link to that feed schedule? I keep hearing people talk about it, but I cant seem to find it.
I think this is the one. It has both Hansbricks & Tangs AN easy feed schedule
HansbricksVsTaNgsEasy_Schedules.JPG
 
View attachment 894059 View attachment 894060 View attachment 894061 View attachment 894062 View attachment 894063 View attachment 894064 View attachment 894065 View attachment 894066 View attachment 894067 Problem: leaves at the top of plants seem to be be getting wayyy too light green/yellowing too soon. I’m on day 51

Medium/grow method: promix hp

Feed: and supplements used: GH CaliMagic 2ml/L, AN Sensi Bloom 2ml/L, Voodoo juice, Bud Candy, Big Bud all at 1ml/L

water source: 5 stage filtered R/O

Strain/age: Mephisto Sour Crack day 51

light used: 55 watt autocob x3

Climate: was steady at 24C and 50% RH, however since I finally got my fan and filter running the other day things are now a little colder than I’d like 20-21C and 48-49RH

Additional info: I know I was guilty of over feeding them at times in the past but never really saw much other than a little nute burn or slight leaf twisting. Hopefully whatever the issue is, it’s something that can be amended and overcome. My thanks in advance for any and all input.

Hello R_HIDIA. I saw your post in live stoner gossip. I think you said it was your first grow. I agree with @namvet25. It definitely looks as if she needs nitrogen. Just up it a little at first. If you are at half strength (most auto growers start there), go to 3/4 strength. Cannabis needs more nitrogen in flower than most companies suggest; that and calcium are what not just cannabis, but most all other plants use the most, so start there. I also agree with @Mañ'O'Green and @STILLSMOKIN. Even the cheap, knock of "blurple" colored led lights can be to much if they are too close, and with just 1 plant, I would go to 36", or as close to that height as possible, since I don't know your height limitations. Go luck and good growing to you, R. :peace:
 
I think this is the one. It has both Hansbricks & Tangs AN easy feed schedule
View attachment 895101
Thanks! It's not too far off what I am doing now, but I have been having really bad luck with CalMag. Once I add it, the PPM and pH get out of control.. Though it looks like I have been adding too much. I'll try this with the GG#4 grow and see how it goes.
 
Hello R_HIDIA. I saw your post in live stoner gossip. I think you said it was your first grow. I agree with @namvet25. It definitely looks as if she needs nitrogen. Just up it a little at first. If you are at half strength (most auto growers start there), go to 3/4 strength. Cannabis needs more nitrogen in flower than most companies suggest; that and calcium are what not just cannabis, but most all other plants use the most, so start there. I also agree with @Mañ'O'Green and @STILLSMOKIN. Even the cheap, knock of "blurple" colored led lights can be to much if they are too close, and with just 1 plant, I would go to 36", or as close to that height as possible, since I don't know your height limitations. Go luck and good growing to you, R. :peace:
Thank you. I appreciate you taking the time to pop over. I’ll make some adjustments this evening
 
:toke: that is a micronute defc., likely Zn from the looks of it,.... question is if it's from lack-of, pH lockout, too much nute ion load in the pot, and/or caused by lights being too close (COB's can be deceiving in power!),....
... I don't see tip burn anywhere really, so I don't think this is a nute overload issue,... pH lockout seems unlikely since you're using RO water and minimal Ca-Mg, plus nutes are acidic (overload/toxicity will drive that down, not up BTW),... so I'm leaning toward lack-of and maybe lights proximity stressing the tops,.... using a hodge-podge of nutes is not wise,.. most are made to be used along with most all the rest of the line-up,.. this is calculated in the feed schedule, accounting for all nute elemts going in cumulatively,.. leave some base line up nutes out and you may fall short on other things, micronutes usually,... Most of those are immobile within the plant, so a low steady level supply is needed all the time,... Get the lights up to 20" or so from the top of tallest plant,... get a micronutrient supplement that has little to no NPK, (Earth Juice Microblast is perfect for this) and feed that up,... also, just to be sure, an in-pot pH reading would be wise too,... AN nutes "self-buffer" in solution only, not once in the pot,...too many other influencing factors!
Your pH meter, calibrated recently? Stored in storage solution? If not, it's accuracy will be suspect,.. if that electrode bulb gets dry, or stored in water, it'll ruin it soon,....
 
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Well my lights were at 22in above for the past week and a half but I raised them to 25 on Friday and moved them up to 30in about an hour ago. I also upped my additives by 1ml in their last 2 waterings. So I’m going to try and get my hands on that product you mentioned and see how things go. I’ve attached a few pics from earlier today. The first two are of one plant and the third is a second plant. The one good thing I can report is that the buds are really starting to swell up!
 
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