What is going on! YELLOW leaves! HELP!

[skimp]

My first grow was all going good until towards the end of vegetation a couple of my lower leaves turned yellow and flaked off. I trimmed these up and kept on with my grow and now I see one of my big leaves toward the bottom of the plant is all yellow/green with brown spots. All of the new growth and the top of the plant looks good which makes me think that it can't be from the outrageous box temperatures. (90+) I've been reading around and people have said my problem may be either from too much nutrients or the plant wanting more nutrients. Which is it. I have been going off of this grow guide and using these nutrients http://www.gthydro.com/images/feedin...ic_english.pdf . I was watering 1L about every 4 days until I reported from a 10" to a 14" . Now I water with 2L every 4 or so days. I wait for the soil to not be so moist. Here are some pictures! Its time to water and I need to know to cut back on nutrients or bump it up a notch! On that chart im currently in the first 2 weeks of flowering. The strand is bbxnl









-skimp

[durty nugget]

hey, it looks like the yellowing leaves are from not enough nitrogen. Then, it looks like you added too much because the leaf tips are curling down and burning. Once a leaf is dead, they don't really come back. Looks ok, but I wouldn't keep going stronger and stronger with the fertilizer. Maintain proper pH.

[dexorated]

you should LST that thing

[white420russian]

Yellow leaves are normal during some strains in the later flowering stage. It i just the plant sucking up power from those leaves if your plant has been flowering for a couple weeks you have nothing to worry (most of the time) but if your plant is still vegging or you have just switched them over to the 12/12 you could be using to many ferts, do a run off of your ph and make sure that is reading between 6.0-6.5 and what is your temperature in your room? Also make sure soil is in 3 different levels of water. (don't really know how to say it but..) Make sure the bottom level is the most moist, then the middle level is a little bit dryer but still moist, and make sure the top level is dryer than the bottom and the middle layer but still moist. The plant roots will strive for the water and grow to get the water at the bottom of the soil this will cause bigger yields and a more sturdy plant! I hope my advice helped you. Also how far along is your plants im sure everyone that is trying to help you is going to need that information.
What we will need to help your fully:
Temperature
Humidity
Ferts
Soil
Lighting
Age of plants
anything else that you are doing to your plants!

[motorheed]

[quote=skimp;2141850]My first grow was all going good until towards the end of vegetation a couple of my lower leaves turned yellow and flaked off. I trimmed these up and kept on with my grow and now I see one of my big leaves toward the bottom of the plant is all yellow/green with brown spots. All of the new growth and the top of the plant looks good which makes me think that it can't be from the outrageous box temperatures. (90+) I've been reading around and people have said my problem may be either from too much nutrients or the plant wanting more nutrients. Which is it. I have been going off of this grow guide and using these nutrients http://www.gthydro.com/images/feedin...ic_english.pdf . I was watering 1L about every 4 days until I reported from a 10" to a 14" . Now I water with 2L every 4 or so days. I wait for the soil to not be so moist. Here are some pictures! Its time to water and I need to know to cut back on nutrients or bump it up a notch! On that chart im currently in the first 2 weeks of flowering.

its classic case of nute burn mate, see the rustic red tips of your leaves thats a dead giveaway your overfeeding them.(they will not recover but you can halt the process),flush with 3 x,s volume of your pot ie; if its a 10 gallon pot flush with 30 gallons of water,then re-apply your nutes remembering that the stated dose of nutes on the bottles are based on a 1000 watt lighting set up so if using less powerfull lights then reduce the stated amount by 1/2,ie; it says put 2-4 ml in per litre then only put 1-2 ml per litre in etc.........

so flush then apply nutes at 1/4 strength for next feed & 1/4 for next again feed then gradually up the dose to 1/2 stated feed(that'll be your full strength)or if your plants looking healthy then just keep applying the doses you've been giving her.

a good lesson for watering is when you water your plants lift up the pot & feel how heavy she is then when due next feed pick her up again,before feeding, & notice how light she is ,after several goes at this you'll be experienced enough just by lifting pot too know whether shes ready for feeding or not
as for yellowing of leaves at the bottom ,thats not unusuall as could be due to lack of light getting down there.
also your leaves which are damaged only remove them if at least 50% or more of the leaf is damagedDO NOT REMOVE LEAVES INTO FLOWERING UNLESS NESCESSARY. 50% or more damaged then cut off at stem & remove from garden.

hope this helps

[white420russian]

Well motorhead this isn't even my thread but I learned alot off of that. Its cool how theres so many people on this forum willing to help you keep your plants healthy even thou no is benefitting from it but you. This is what I love about the cannabis community! Also motorhead I believe everything I said was true but in a simpler version of what you said? If anything I said was wrong please correct me so that I will not have the wrong information and neither will anyone else reading this thread, seeing as I am a newbie grower I am learning something new everytime I open a thread!

+Rep for you motorhead!

Thanks,
White420Russian

[motorheed]

Originally Posted by white420russian

Well motorhead this isn't even my thread but I learned alot off of that. Its cool how theres so many people on this forum willing to help you keep your plants healthy even thou no is benefitting from it but you. This is what I love about the cannabis community! Also motorhead I believe everything I said was true but in a simpler version of what you said? If anything I said was wrong please correct me so that I will not have the wrong information and neither will anyone else reading this thread, seeing as I am a newbie grower I am learning something new everytime I open a thread!

+Rep for you motorhead!

Thanks,
White420Russian

yep what you said is spot on mate

we're a caring bunch in the ganja community & we're all still learning even the more experienced growers.

peace & happy growing

[doindia]

as much as i DO see what motorhead is talking about, (because there are burnt tips) i believe the problem is more than that...

it looks like you have either a mg def. or K def. sometimes K def can look like nute burn if you go to the link in my sig over on the right you can scroll through and look at defiencies. the reason its not "nute burn" is NB starts at the tips and burns the plant, anywhere is burn will look like the tips, not just yellow, the classic green viens yellow middles scream MG or possible K def. my suggestion to you is flush your soil get your ph in order and add 1/2 strength nutes to the last gallon.

it appears like some sort of lock out.

also dont get me wrong, you can see classic signs of fert burn but it looks like more than that.