New City Grower 2.0

Take your time and try to explain everything in detail starting from a week prior of noticing the problem Cannabomb. Feedings, waterings, how often, what you were feeding and how much per gallon, and what type of soil she's in. Try your best not to leave anything out. It may take awhile to put all that together but with the great subscribers here and a detailed history I'm sure we can get to the bottom of this.
Also when feeding you should balance your PH AFTER mixing the nutes, not before.
 
Welcome to Cannabombs "Mystery of the week"


I am growing a Northern light Automatic in soil.
The soil has a Ph of 5.5-7 as stated on the bag.
The plant has been great with explosive growth up untill 7 days ago.
I started my seed on the 13/5/14
Problems started showing half way through week 5.

It all started when I changed my Fertilizer, I had read that you are to always check your PH before giving the plant its food, as I use powder nutes that get sprinkled over the soil first, I could not do that, so I went and got some basic Tomato liquid nutrients.
The liquid nutes have a NPK rating of 3-1-5 and also contain trace elements. The bottle says to use it once a week but it says nutrients remain active and usable for 2-4 weeks in soil. They recommend 10ml per liter.

On the 18th of june I gave the plant 10ml of fertilizer with 1.5 liters of water, I did not check the P.H going in, but after I saw this problem I made up another feed of 10ml fertilizer and 1.5 liters of water tested the PH.. the water was so dark I could not see the PH drops doing anything at all. If anything it looked like my PH was 3-4
This was the first sign I saw, it happened very fast within 24 hours.
The markings were only on two leaves, and it was the last two fan leaves on the top of the plant(the main cola or top)
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So on the 21st, Three days after giving it this fertilizer the problem started getting worse and I was advised to flush the plant, which I did.
I checked the run-off after 30 mins of flushing and it was still coming out at 5.
2-3 hours after the flush the plant showed dramatic spread of the problem it seemed to move across all the tops in a matter of hours, the problem was much more spread out and not so much direct damage to one leaf, they all had a spot or two and all looked alittle greyish..

I let the plant dry for two days and on the 24th I gave the plant a very light feeding of my old nutrients.. they have an NPK of 10-6-10 I gave it half a teaspoon and sprinkled it over the soil and watered, I checked the PH and it was still sitting under 6.

On the 25th the problem seemed to stop spreading but the already affected leaves seemed to be getting worse.

On the 26th being today,
I flushed the plant for another 30 mins and I was not going to stop flushing untill my PH went back to 6.5 it took about 20 liters of water till the run off stopped coming out orange and more clear like water, checked PH and got a rough 6.5 that was roughly 12 hours ago and now the problem seems like it has started to spread again, now almost all the tops have been affected.

There is not alot more to say, I am hoping the pics can explain abit aswell =)
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If you look close you can see that every leaf that is light green has been affected in some way or another, some leaves also have bluish grey patchs not brown, the main steam also has red lines running up...

Thanks alot for reading and helping me so far guys, I am sure it gets annoying have newbies always asking question you have answered thousands of times, I really appreciate the help that I have had, from buying my light to buying hydrogenperoxide for fungal gnats its great to find like minded people in a place that isnt full with big heads and people just being A$$ holes all the time =)

Ask for anymore info and I will do my best, and please if I just need to chill out and stop worrying tell me, I would love to hear that =)

The pics dont do the problem justice, it looks quite abit worse in person =/
 
Here's what I found on the interweb for you on what I think could be your problem, manganese deficiency

Problem: Leaves may become yellow in between the veins, with mottled brown spots on the affected leaves. These brown dead patches may spread and eventually kill the leaf. Leaves may also shred and fall apart.

Overall growth of the marijuana plant may be stunted. With a manganese deficiency, the yellowing will begin at the base of the leave and move outwards towards the tips.


Solution for Manganese Deficiency in Cannabis

Your plant may also exhibit signs of a manganese deficiency if the pH is too high, or if the plant is getting too much iron.

Learn how to manage your pH when growing cannabis.

Please note: After a manganese deficiency is cleared up, the problem (brown spots and yellowing leaves) will stop spreading to other growth usually within a week. Please note that leaves which have been damaged by a manganese deficiency will probably not recover or turn green, so you want to pay attention to other growth for signs of recovery.

In soil, calcium is best absorbed by the roots in the 6.0 - 7.0 pH range (some growers recommend keeping the pH slightly lower, from 6.0 - 6.5, if you suspect a manganese deficiency in particular)

In hydro, calcium is best absorbed by the roots in the 5.5 - 5.8 pH range (in hydro, it's generally recommended to keep the pH between 5.5 - 6.5, but manganese specifically tends to be best absorbed below 5.8)
If you suspect your growing cannabis plant has a manganese deficiency, flush your system with clean, pH'd water that contains a regular dose of cannabis-friendly nutrients that includes manganese. This will remove any extra iron or nutrient salts that may be affected the uptake of manganese, it will help restore pH to the proper levels, and will supply the plant with any missing nutrients.

You are looking to avoid higher pH ranges, as this is where manganese deficiencies are most likely to occur
 
:reading420magazine:
 
Cannabomb said:
Welcome to Cannabombs "Mystery of the week"
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That looks like late nutrient lockout due to early heavy nitrogen, you can flush and keep going but those leaves won't come back
 
@ Skunnymonster, I did suspect a manganese lockout at first, but like you said, this happens when PH is to high. Manganese can be absorbed at ph level as low as 4, and I think that is where I was sitting around for the past few days.

@Buckshot, From all I have read I came to the same conclusion, nute lockout from to low of a ph, but when you say from to much nitrogen what do you mean? I think my ph was below 5, meaning that it may have locked out all N-P-K CA and MG.
Thanks alot for the input!

@b.real I clicked the link, I have to say our problems look alittle different, I would say from pics I have seen yours looks more Calcium related, I could be wrong I am just comparing as close as possible and they look abit different, but regardless a similar problem, how early into flower did this show up do you remember?

Thanks alot for the input people, I guess I just go back to business as usual, feed water feed and then flush... or should I give it something special? I live right next to a hydro store but I avoid it like the plague, if need be I can make a visit though..
 
Cannabomb said:
Welcome to Cannabombs "Mystery of the week"
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Nice. I think I'll adopt that, change the name, & have one here every week

The Cannabis "Mystery of the Week"​

My uneducated guess is as B said. Just leave her alone for about a week or until the soil is completely dry; Which ever comes first.
b.real said:
the flushes should help. I would let the soil dry out now.
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As Pj has been saying of late, there may be just too much traffic right now.


His PH levels were too low not too high Monster.
 
I did have a calcium issue. since your plant is having issues at the top it's an immobile nutrient issue. these include: Iron (Fe), Calcium (Ca), Manganese (Mn), Zinc (Zn), Copper (Cu), and Boron (B).
 
Great job on the info, Cannabomb. Here's what I think when I read it. The tomato ferts were no bargain. You flushed really well as you should have a couple of times and things kept getting worse. You've fed with your old ferts and still things get worse. Everything was fine until you started feeding the tomato ferts. pH readings for the tomato ferts were really low.

I'm just repeating all that stuff to show I read your post very carefully. Based on what you've told us I'm going to make a guess that the very low pH of, and god knows what else is in them jacked up your roots. If the roots have been damaged then it doesn't matter what you feed, the plant is not getting enough food. One can guess that the roots will grow and heal over time if the plant doesn't die.

As much as you dislike the hydrostore, you may think about getting some gentle fertilizer, like fish emulsion. The general organics one is good, but there are others that are less expensive and basically the same. The grow shop staff will help you find one. Also get some cal mag. There isn't much in that soil anymore after the two big flushes and the light feedings. Feed the fish ferts at close to full strength and give them a full dose of the cal mag. It is hard to over-do fish ferts, they have readily available nutrients, and will be gentle on roots.

There is no guarantee that doing so will save the plant. It makes sense that the roots were damaged if you think about it. The damage is causing the plant to starve slowly...
 
hey BAR :thumb:
 
@ Peejay, Thanks alot for combing over what a wrote down, from what I can make of it your right, the PH went way to low and caused damage to the roots, the thing is.. I gave this plant 5ML of the liquid fertilizer and it didnt show any burn or slower growth, Im stunned that an extra 5ML on a plant almost 3 times the size and alot more hungry could cause such a massive problem..
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I dont think I have killed the plant, If i look at over all health, as in all the steams, under-growth and new growth it all looks OK(no color change or burn or marks).... all the damage is showing up on fan leaves, and not on the little leaves that seem to stick out of the bud itself..if you know what I mean?

Also the buds have been packing mass on in the last 3 days, I dont know if it would be alot more growth if I had not done this to the plant, but I can definitley see the buds swelling up..
I would have to get my GF to go the the store as I am in her country and do not speak the language... that is not easy she is already pissed off about the whole situation lol..

Thank you so much for the reply.
I really hope it can recover, and damn.. lesson learned the hard way I guess, dont buy cheap crappy fert and expect it to do anything but ruin your hard work :confused:

@b.real Yea I agree with you also all the problems are affecting the tops of the plant so I guess at the very core of the problem it is something to do with immobile nutrients.. With your plant you showed me, do you remember how early into flower it appeared? you seem to have not been affected to much as those buds were fat and swollen.. I hope I can produce the same. Thanks alot for all your help the past week, I would have probably ripped the plant out if it wasnt for the support from 420!!

@ B A R, Haha I was inspired by the way you do your posts, they are alway eye catching!! I think the mystery of the week would be a great addition to the journal... I would guess it would be me with the mystery every week though =)

Thanks a ton for letting me come to your journal... I dont know.. words cant really express the gratitude so i just say

Thank you :420: you all rock my socks
 
Keep seeing that floor and thinking its a post from BAR!
 
even with damage the plant will produce great buds as long as you get her healthy. if the ph is too low it means you fed too much fertilizer becuase fertilizer is acidic. you ruin your yield by having issues during the stretch. during the stretch is when the plant really sets itself up.

flush, let dry out, use water only next time, feed next time. she'll be good :thumb:
 
Cannabomb said:
Hey all, I need some advice..
My plant seems to be showing more sighns of phospherus def, the thing is I think it because my PH was way down at 4 and I have been struggling to get it back up to 6.5.. I have flushed (alot of water) twice now and I thought my PH was back up but the plant is still showing new spots... Im confused, I only have 3 weeks left and wanted to start flushing for the final 3 weeks... What should I do? give it more nutes or just stop and let it do its thing? Have I done serious damage to my yeild?


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Any help would be much appreciated =)
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Your leaf damage appears to be a phosphorous deficiency due to pH lockout. Your fertilizer is too low in phosphorous and potassium for flower.


Here is a nutrient availability chart

pH_chart7.jpg




I use General Hydroponics Flora series 3 part nutrients that can be mixed for all stages of vegetative growth and flowering. General Hydroponics Flora series can be used with hydroponic, soil and soiless mediums.

https://generalhydroponics.com nutrients flora series

https://www.growitbest.com general hydroponics Flora series performance pack
 
Peep, Peep, always a great read.
 
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