HELP some leaves are turning yellor/brown and dying

Hello there thanks for reading up and helping out. the auto flower plant i have has had a few leaves turn throughout its life cycle. I mean maybe like 4-5 at most in its 6 weeks and the other female regular plants didn't have any turn colors until this last week when i switched the light cycle to 12hrs and made them flower. i use less nutrients then the recommended amount so that im not overloading and burning them. i do my best to keep the heat between 77-86 f. the humidity could probably be more its usually between 45-55% i water them 2 times a week a little more than a liter at a time will produce some run off so that's usually how much i will use. it really only affects the fan leaves that are at the bottom of the plant the last pic i have of the growth leaf and not the fan leaf that's affected is really the only one i can find that has any yellow on it. they're all turning that lighter yellow/lime green color now as well when they were a nice vibrant green these last few weeks. any suggestions as to what i could be doing wrong and ways to possibly fix what is happening here. thanks for all of your help. greatly appreciated.
-Ternz

What nutes are you feeding them?

ZoBudd said:

What nutes are you feeding them?

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advanced nutrients grow micro bloom and then a few more of the advanced nutrients products. i follow the schedule they have maped out

Posting here to watch this thread. I have this EXACT problem. Do the problem leaves come off REALLLLLLY easily? I barely touch my problem leaves and they fall right off.

Edit: Btw, I personally think it's Phosphorus or maybe Cal/Mag but either way it's a deficiency. I am in no way an expert but I have been doing exhaustive research and this is what I concluded. If somebody else can weigh in with more expertise PLEASE say something. Idk what is happening to my plant but I am in flower like OP.

yes they come off very easy. just the slightest tug and its gone. sometimes even just inspecting them and barely touching makes them fall off

Are there any small creatures flying around near your plants or lights?

You are acting like a worried mother here...treat the leaves like children,some grow up nice and some do not.In other words pull the naughty leaf and carry on...

fandango said:

You are acting like a worried mother here...treat the leaves like children,some grow up nice and some do not.In other words pull the naughty leaf and carry on...

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im sorry a worried mother?? no ones leaves should be turning that color there's obviously something wrong here buddy. its 1 week into flowering and has it on some of the growth leaves. not just gonna start pulling those and roll with it. dumb-ass. i would appreciate someone that had some actual advice as to why they could be turning to reply and let me know whats good. again my first grow as well so i think its more of an eagerness to learn and correct for future experiences as opposed to saying fuck it and doing trial and error by myself. i have 3 plants. that's all i intend to grow as of this moment and in the future so i would like to get the maximum amount out of the plants to ensure i at least make my money back for all the shit i bought to do it.thanks again

AnimalMother1974 said:

Are there any small creatures flying around near your plants or lights?

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no, no bugs flying around plants or anything

if its a deficiency of those things does that mean i should be giving it more of the nutrients? becasue right now im giving it less than i was before because i don't want to give it nutrient burn. its worse today than yesterday and is starting to effect all the growth sites on the white widow plant i have they're all like a weird lime green/off yellow and starting to look bad so i need to correct it so buds can actually start developing. its only a 6 week flowering plant and im already 1 week into it. so the sooner the better

i used happy frog potting soil. 5 gallon buckets with proper drainage and added some perlite to it as well. the advanced nutrients that i use has a recommended amount set by their specialist and i always use like 2-3 ml less than what they recommend so i can try to not burn them

CrazyTernz said:

no, no bugs flying around plants or anything

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Check under leaves, you would be looking for tiny tiny crawling things rather than flying things, not saying you have bugs but check.
Could be phosphorous But not sure.
Think I may have said on the other thread but I don't feel 1 litre is near enough water for 5 gallon buckets. That's nearly 19 litres, I'm not in the same part of the world, we have a different gallon to you, I use 15 litre pots, I water ever 3 days with 2.5-3 litres, I'm in coco so there's a big difference but compared to some guys my waterings would be considered not often enough.
If I were you I would want to rule out salt build up and roots drying right out from not watering thoroughly enough. Give them a big old watering with plain phd water. make sure they have a fair amount of run off, I don't mean a few drops, don't let them sit in the run off though. If your medium has been drying out too much too long it may not soak up the water as quick, water each with a litre, then go back to the first and give them another litre, and repeat. Take your time doing this so they can absorb as much as possible. see how many litres they take.
I'm still not sure what PH you are using when watering?
I would give them a flush or two over a few days.
I cant say I'm 100% on this but its worth going through those steps for now because one thing I am sure of is its not overwatering.
It would be good to know your ph and your run off ph and if you have a ec/ppm meter the readings before watering and run off of that.

EDIT please check this thread.. may provide some insight into your problem...https://www.rollitup.org/t/ill-never-buy-foxfarm-happyfrog-again.218287/

coreywebster said:

Check under leaves, you would be looking for tiny tiny crawling things rather than flying things, not saying you have bugs but check.
Could be phosphorous But not sure.
Think I may have said on the other thread but I don't feel 1 litre is near enough water for 5 gallon buckets. That's nearly 19 litres, I'm not in the same part of the world, we have a different gallon to you, I use 15 litre pots, I water ever 3 days with 2.5-3 litres, I'm in coco so there's a big difference but compared to some guys my waterings would be considered not often enough.
If I were you I would want to rule out salt build up and roots drying right out from not watering thoroughly enough. Give them a big old watering with plain phd water. make sure they have a fair amount of run off, I don't mean a few drops, don't let them sit in the run off though. If your medium has been drying out too much too long it may not soak up the water as quick, water each with a litre, then go back to the first and give them another litre, and repeat. Take your time doing this so they can absorb as much as possible. see how many litres they take.
I'm still not sure what PH you are using when watering?
I would give them a flush or two over a few days.
I cant say I'm 100% on this but its worth going through those steps for now because one thing I am sure of is its not overwatering.
It would be good to know your ph and your run off ph and if you have a ec/ppm meter the readings before watering and run off of that.

EDIT please check this thread.. may provide some insight into your problem...https://www.rollitup.org/t/ill-never-buy-foxfarm-happyfrog-again.218287/

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i have the ph up and down bottles and just the shitty test strips its not a legit one but the ph of the water i give them is always between 6-7. i literally have the same growing conditions as the other guy and everything. im using a 600w led mars hydro tho. also only growing 3 plants as well. i have to water them today so ill do it now with just regular ph'd water and test the runoff. ill let you know what the strips say when i do it. i checked for bugs but dont see any. in the last 2 days it hasnt really gotten any worse. and the nodes and its leaves aernt as yellow they have some green back to them. all since i gave them less nutes than i was originally. the buds on the autoflower are still growing and its getting frosty as fuck lol. but yeah some of those bottom leaves still look like shit, the holes they have in them are most likely because i touch them to see if theyre crispy and dead yet or what so thats prolly my fault. good looks on the forum about the happy frog i had no clue the place where i read all the info about growing http://www.growweedeasy.com/home said it was a pretty good one. i know its a corny website but this is my first grow and a duded from work that was growing is really the reason i started to said he gets all his info from there so thats just what i used . going back to the last few days ive also been keeping the ac on in the house to keep the temp down my rooms on the top floor so it gets kinda hot. if im here i can keep it controlled but if i go to work and come home it can sometimes be up at 90 f. instantly i turn another duct fan i have on and cool it off asap and i have spray to keep the humidity up because its usually a little low. ill just give it the water and watch it closely from here on out. ill also go back and check the other forum for any information, we literally have the same problem and were working together but then people got mad i posted pictures there so i stopped looking. as always thanks for the help man!

all of the run off is coming off at 7 on the scale. and you're right it takes about 2 liters for there to be some run off in the bottom. and not like 2 drops im talking actual run off that i had to go and dump out so it wasn't sitting in it

CrazyTernz said:

all of the run off is coming off at 7 on the scale. and you're right it takes about 2 liters for there to be some run off in the bottom. and not like 2 drops im talking actual run off that i had to go and dump out so it wasn't sitting in it

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Cool, growweedeasy is a corny name for a site but its a good place to diagnose or at least cross reference info. Always good to check out a few sites.

You know a lot of damage done with nute burn, lock out, deficiencies will not recover, if a leaf is crispy brown its unlikely to return to lush green, the idea is to stop it spreading further.

I am not saying happy frog is shit, just worth knowing problems other people have had so your aware of the possible problems and can keep an eye on them.

Everything I have said so far to you in any post is just throwing ideas at you, do not take my word as gospel, or anyone else's. Just use the suggestions to cross reference and do lots of reading and researching.

PH run off doesn't seem too bad but consider this. Accuracy is important, If you are watering with a solution of ph 6 and your run off is ph7 then your rootzone could be as high as ph8, that's an example only. I have never used ph strips (not since science class in school) You could get one of those liquid tests on amazon or local tropical fish store, they are not accurate but reasonable. But you need to be vigilant when using them to make sure you get even results. If I remember right you half fill a tiny vial with water and add 2 drops of indicator and shake. If your off by a few mil of water or the drops are extra large one try and small the next then the results are really different.
How ever you test ph I would double check your input ph and run off for a while, be as accurate as you can be with whatever method you use. I would try a ph of 6 as a good test, if your run off is 7 then your rootzone is too high.

Ideally you want one of these to be truly accurate...
http://www.ebay.co.uk/itm/Essentials-pH-Pen-Digital-Meter-Tester-Stick-Nutrient-Management-Hydroponics-/261106562891?hash=item3ccb29f74b:g:KRYAAOSw2x1XKybd

Good luck,

Agree...Ph seems a little high try to stay between 5.5-6.5 and the strips work just fine. Also make sure the solution is not being poured on to the plant itself but only into the soil careful not to touch the leaves. Good drainage is a MUST..pot should start to drain fairly quickly once the nuts or water is added and dry in 3-5 days to re-fed/water. She's very very wet! not in a good way looks like you are doing fairly well. Good Luck!

candagrowqueen said:

Agree...Ph seems a little high try to stay between 5.5-6.5 and the strips work just fine. Also make sure the solution is not being poured on to the plant itself but only into the soil careful not to touch the leaves. Good drainage is a MUST..pot should start to drain fairly quickly once the nuts or water is added and dry in 3-5 days to re-fed/water. She's very very wet! not in a good way looks like you are doing fairly well. Good Luck!

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I'm using soilless, is a 5.8 reading OK? It's usually 7.6 but when I add my ferts and Cal/Mag it's lowered to 5.8.

You stated your plant is an auto. Autos are on their own timeline whether you're running your lights 18/6 or 12/12. They don't have that long of a lifespan so if your plants are 6 weeks then maybe it's natural cycle winding down.
Also autos don't like a lot of nutes so go really light. Like 1/2 recommended strength or less, and alternate feedings with plain water. And let them really dry out.

CrazyTernz said:

all of the run off is coming off at 7 on the scale. and you're right it takes about 2 liters for there to be some run off in the bottom. and not like 2 drops im talking actual run off that i had to go and dump out so it wasn't sitting in it

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Any luck bud? You're the only person I've seen in ALLLLLL the forums that has the same issue as mine.

The shit happened to me with my autos. Totally grower error. Hot soil, then adding nutes too early, etc. it was a horror show.