This problem is beating me need urgent help guys

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azzah

Active Member
Hey guys so 2 females in to 3 weeks flower. They seem to be yellowing on the top older leaves the bottoms are fine and the edges are burning is it nute burn nitrogen toxicity or hps light burn or a mixture of them? Please let
me know

Grow tent
Light 400 watt hps cooltube
Soil Canna terra professional (peat moss)
Ph 6.0
Temps are inbetween 20-24c
Have only been giving water since this has happened i was on a feed water feed scedule and i do let them dry out any help would be much appreciated please :)
 

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st0wandgrow

st0wandgrow

Well-Known Member
How far away is your light from the canopy? What type of water are you using? Are you messing with the ph of your nutrient solution at all?
 
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azzah

Active Member
i know i wont lose my plants but i want the yield and quality to be as good as possible with whats going on im not going to get it haha. i get so much diff ansers i need a real reply not saying your wrong lol
 
A

azzah

Active Member
st0wandgrow said:
How far away is your light from the canopy? What type of water are you using? Are you messing with the ph of your nutrient solution at all?
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from the canopy bro is 40 cm/ i just use regular water but let it sit for like like a week haha. and messing with ph nute soluton? no way brother i always put it in at 6.0 or 5.9 nothing else. it has me beat :(
 
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azzah

Active Member
i also have a good ph metre cost me 120 bucks not one of those yellow things for 5 bucks haha also i have calibratiion soloution for 4.0 and 7.0 oh and storage solution so dont think ph is prob
 
st0wandgrow

st0wandgrow

Well-Known Member
azzah said:
from the canopy bro is 40 cm/ i just use regular water but let it sit for like like a week haha. and messing with ph nute soluton? no way brother i always put it in at 6.0 or 5.9 nothing else. it has me beat :(
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You're using a peat based soil. I don't know if any liming agents were added by the manufacturer but peat has a tendency to be very acidic, and will become more so over time as nutrients accumulate in the soil. You could be experiencing lock out due to this. Try raising the ph of the nutrient solution to 6.5 to 7.0. Each nutrient has a range where it is plant avaialable, and you could be missing that window if your solution is 5.9 and the soils ph is say 5.2. Anything that is bio available in the 6.2 to 6.5 range could be getting locked out.
 
A

azzah

Active Member
st0wandgrow said:
You're using a peat based soil. I don't know if any liming agents were added by the manufacturer but peat has a tendency to be very acidic, and will become more so over time as nutrients accumulate in the soil. You could be experiencing lock out due to this. Try raising the ph of the nutrient solution to 6.5 to 7.0. Each nutrient has a range where it is plant avaialable, and you could be missing that window if your solution is 5.9 and the soils ph is say 5.2. Anything that is bio available in the 6.2 to 6.5 range could be getting locked out.
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Ok i will ph to 6.5 see how it goes its so trippy haha next grow its coco atleaste you cant really over water or over feed
 
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azzah

Active Member
Il be honest i tried to flush today with 5 x 9 litre watering cans and the ph would not drop at all it was at 6.4 everytime i added water to flush i put my ph to 6 5.8 5.0! And 4.5 and the ph on the run off stayed at 6.4-6.3 everytime And this is onky after inadded the first lot of flowering nutes before that run off and ph was same as what it went in ahh i have no idea :(
 
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azzah

Active Member
I am seriously not sure hey i just gave 3/4 nutes today cos the tops are going yellow havent feed in couple weeks
 
DirtyMcCurdy

DirtyMcCurdy

Well-Known Member
azzah said:
I am seriously not sure hey i just gave 3/4 nutes today cos the tops are going yellow havent feed in couple weeks
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Yeah, that might have something to do with it. Probably could have mentioned that. You said you were only giving them water but not for the past 3 weeks!
 
A

azzah

Active Member
DirtyMcCurdy said:
Yeah, that might have something to do with it. Probably could have mentioned that. You said you were only giving them water but not for the past 3 weeks!
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Well i stopped feeding when the leaves turned all burnt and crispy i foilar feed today to hopefully thatll get it back to normal.
 
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