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over fertilization

crissy

Member
i think i have over fert... my plants. they are nearly in the 4th week of veg. there are yellow tips on nearly every leaf! will they die. and what should i do?
thanks.
 

xmobotx

ecks moe baw teeks
ICMag Donor
Veteran
use one of the forms (soil or hydro) to describe your issue

overfed plants can be "fixed" by not feeding them - but, w/o pix and a good description, no one can identify the issue or the severity

maybe use colored text for your answers

from: The Complete guide to Sick plants~

SOIL:

How long has this problem been going on?
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How long have they been in the soil mixture they are in now?
How Tall are the plants?
What PHASE (seedling, vegetative or flower) are the plants in?
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? (Include how many subjects to pot)
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
What Nutrient's are you using?
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
What method of pH test was administered? Using Strips? pH pen?
How often are you watering?
When was your last feeding and how often are you feeding?
What size bulb are you using?
What is the distance to the canopy?
What is your RH Factor? (Relative Humidity)
What is the canopy temperature?
What is the Day/Night Temp? (Include fluctuation range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Are you using water from a water softener?
Has plant been recently pruned, cloned or pinched?
Have any pest chemicals been used? If so what and when?
Are plant's infected with pest's?


HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on?
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents)
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...)
What STRAIN are you growing?
What was the establishing technique? (Were the seed or clone?)
What is the age of your plants?
How long have they been in there mixture they are in now?(coco,soiless etc..)
How tall are the plants?
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
What Technique are you using?
What substrate/medium are you using?(Hydroton, RockWool etc.)
What is the Water temperature?
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using?(If growing soiless)
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding? (If using soiless)
How often are you giving nutrients? (If using soiless)
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM you are using?
What is the pH of the "Tank"?
Are you sure your calibration is correct on your equiptment?
When was your last watering?
What is your water temps?
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients?
What size bulb are you using?
What is the distance to the canopy?
What is your RH Factor(Relative Humidity)?
What is the canopy temperature?
What is the Day/Night Temp? (Include flucutaion range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Are you using water from a water softener?
Has plant been recently pruned, cloned off of or pinched
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's
 

darwinsbulldog

Landrace Lover
Veteran
i think i have over fert... my plants. they are nearly in the 4th week of veg. there are yellow tips on nearly every leaf! will they die. and what should i do?
thanks.

they won't die if you do the right by them, you could be underfertilising them too so test the soil ph for one, make sure it's in the appropriate range for whatever medium you have, 6 is normally safe in most. if it's really low (5.5 or lower) or above 7 it could be that you're starving them as the nutes are going to be locked out of the plant and they can't absorb it. if it's in a reasonable range then you might be right that it's over feeding them and you can flush the medium with just plane water normally 3.5 times as much water as much medium as you're using. make sure to let it drain properly though so you don't suffocate the plant. best of luck buddy
 

crissy

Member
they won't die if you do the right by them, you could be underfertilising them too so test the soil ph for one, make sure it's in the appropriate range for whatever medium you have, 6 is normally safe in most. if it's really low (5.5 or lower) or above 7 it could be that you're starving them as the nutes are going to be locked out of the plant and they can't absorb it. if it's in a reasonable range then you might be right that it's over feeding them and you can flush the medium with just plane water normally 3.5 times as much water as much medium as you're using. make sure to let it drain properly though so you don't suffocate the plant. best of luck buddy
thanku. much appreciated. i have flushed them and im giving them a couple of days or so to dry out. and i will cut down on the nutes. the ph is ranging from 6-7.:tiphat:
 

crissy

Member
^^ why do you want his email? Are you a spy/cop? LMAO There is something called PM's.

i have just worked that out but its telling me to activate my account and im trying to but carnt seem to find it. and no i am not a cop. i hate the pigs believe me!!!
 

crissy

Member
i have flushed them out, two days ago but the new leaves that are sprouting out still have yellow tips? any advise?
 
When are you going to fill out the form that was posted so we can get an idea of what kind of system you're running and what kind of product you're using??
 

spice A

Member
after my experience with over fertilising, i would say keep flushing until the plants show signs of recovering! no nutes just water!
 

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