leaves turning yellow and turning brown at tips cheese plant

Ok so I have 3 plants in soil/coco I used fox farm soil mixed in some ash guano alil lime and compost. using 600w of light 400w hps and some side lighting.

im 4 weeks into flowering and I have noticed that my plant in the middle the big buddah cheese in a 7 gallon pot the leaves have turned yellow mostly the lower ones at first then they started to die off.

I am doing a scrog so I dident focus much on the growth under the screen I gave them some big bloom 2 times at once a week dose I had figured that the last time maybe I gave them alil too much.

so I flushed last week all 3 plants and since then it seems like mostly the bbc is turning yellow the main cola bud leaves a cple have turned yellow and tips brown and curled up crispy.

The rest are mostly clawed downwards a couple bud leaves have straightened out and point straight across but I am worried my 707 headband looks kinda yellow aswell.

What is funny is that a plant I got from someones outdoors that was supposed to be some kind of cheese which was a runt I some how have fairly green leaves on that fatter buds.

Keep in mind the runt dident come from a seedbank and I haven't been giving it as much water as the other plants the headband is in a 5 gallon also but started out as a bigger plant so I was giving it a decent amount of water.

So any ideas on this would help me a lot as I don't wanna ruin my crop and loose yield.

the 2 bigger plants have smaller bud then the runt but they have more branches id say. the runt I also snapped a couple branches off while trying to tuck under the screen before going to 12/12. so I don't know if that has anything to do with it.

I have also trimmed off the lower growth below the screen. the 2 cheese plants I dident top yet the bbc and the headband that I topped have almost the same size buds.

I just finished the 4th week yesterday. heres some pics too

dude you should have flushed before you put them in flower but it is to late now just give it time and see what happens ,but your yellow on top to ,i think the dead leaves that are crisp you should go ahead get off plant

Seems like a cal mag deficiency. I just recently experienced this about a month ago. It'll start from the bottom and work it's way up the plant. I fixed with Epson salt. Also you should add a bit more nitrogen to your solution if your mixing your own.

This is the soil mix your using as medium causing this. Next time use professional pre mixed coco from hydro shop. This stuff is made for growing dope under lights, your just guessing with the mix u threw together. Not much you can do now as its the medium. The yellowing will reduce final weight. Salt build up and N lockout.

lots of problems here, but mostly, she is hungry for food

coming on week 5 should I just flush it and then hit it with one last dose of the nutes or just let it be and reg water till chop???.

ya so when I flushed I must have pushed all the salts down into the pot more and maybe I dident get all of it out

420newbieg said:

coming on week 5 should I just flush it and then hit it with one last dose of the nutes or just let it be and reg water till chop???.

ya so when I flushed I must have pushed all the salts down into the pot more and maybe I dident get all of it out

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there is no salt build up and never was, you didn't put any salts in there, you used big bloom a couple times which is a guano base nute.
you should either get some nutrients like dyna gro foliage pro or brew up a tea. your girls are starving. Forget the word flush, forget whatever it is you think that does. get that girl some food and feed it lightly till it's done

ok what I have is big bloom and lime and guano and stove ash and molasses will mixing any of those help

420newbieg said:

ok what I have is big bloom and lime and guano and stove ash and molasses will mixing any of those help

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I'm sure you could brew up a tea with those, i am not a expert in teas, but I think you got the basics there.
here is a great website and a recipe from the best soil doctor there is.
http://www.soilfoodweb.com/Using_Tea_or_Extract.html

That is nutrient lock up. It was probably caused from to much food after noticing yellowing. Cal/mag is what you need but you have to ph the water to 5.8-6. Coco has no cal or mag added. Unless your nutes are for coco you need to add it to your feed.

Jalan42510 said:

That is nutrient lock up. It was probably caused from to much food after noticing yellowing. Cal/mag is what you need but you have to ph the water to 5.8-6. Coco has no cal or mag added. Unless your nutes are for coco you need to add it to your feed.

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How can he have nutrient lock up when he didn't use any nutes? did you read his post or just look at the pretty pictures and throw out some bs diagnosis so you could look cool?

Look pretty hungry too me. They need to be fed a proper diet.

what I said is I used big bloom in flowering and once in veg and I mixed the soil based on what a grower told me with what I have.

so I used fox farm which has nutes ive seen people grow whole crop with just ocean forest and nothing added. I used half coco and half soil I also mixed in a quarter of a 5 gallon bucket into each 5 gallon pot I added some stove ash and and some lime into it.

I also mixed in alil lime in the top of the soil around week 6 in veg also when I used big bloom I also added a pinch of lime to that water so it had alil cal/mag in it.

im not sure if maybe I dident use enough if so couldent I just add some lime to the top of the soil and mix it in.

either way I watered with some big bloom water that I added some guano to and alil molasses had alil bit of lime at the bottom of the 2 liter bottle.

I poured some in and today my leaves look alil greener almost like turning to light green from yellow.

I started my plants in lil 2 liter like pots with just fox farm and coco after a month in veg i transplanted them into bigger 5 gallon pots one in a 7 gallon when I transplanted after the month the mix I made for the final pots had some compost guano and stove ash and lime mixed into it .

So if all of that stuff I mixed in my soil mix wasn't enough to finish then I must need more nutes.

I don't understand when I used just reg ocean forest I grew a plant from start to finish no problems got an ounce off each plant.


and ya jalan that's kinda what I noticed a week into flower real flower not right after I switched I noticed the lower big fan leaves were starting to go yellow and fall off I gave it some big bloom water that had alil lime in it and the the yellowing seemed to slow down.

I waited a week later after using reg water 2 different days and gave em a 2 liter bottle of the big bloom mixed in the water I used a quarter of a cup in 2 liters poured that in . noticed the tips where yellow going brown on some leaves fairly straight I wait a few days and see more lower leaves a and a middle one or 2 going yellow so I flush thinking salt build up from the nutes I gave it i wait a week after the flush and the leaes are all droopey starting to claw down and the tips are turning brown and curling getting crisp.

now here I am entering week 5 and the smaller plant to the left which was dark green a week or 2 ago is now going yellow like the rest of the bigger plants.

after yesterday some of the leaves have appear to straightend out but some still have a slight droop and all plants are still fairly yellow alil greener then yesterday thought.

im at the bottom of my big bloom bottle so I don't have more then one more batch to mix up of water and I am starting week 5 of flowering.

would mixing in some lime in the top of the soil help or in my water or what about rolaids I have herd crushing some up will work

ok heres a pic or 2 I hope I don't kill the things

ok so I started watering just about every day giving them a decent drink.

Since I noticed this problem I have been doing what people said and I have sprinkled a couple small handfuls of lime on the top of the soil and I have adjusted my tap water by adding 2 caps of lime juice into 2-1/2 gallons of water bringing my ph down to 6.0-6.2 and I have been watering with that I also mixed up some bloom fert in a gallon with a pinch or 2 of guano and I gave it some of that.

so far since this problem got bad and I posted I have giving them the ph'd water then like everyother day ill hit em with the fert water.

So far it appears that some of the yellowing leaves got worse and are falling off the rest of them are kinda turning back green like a light green.

So maybe things are getting better ill have to wait and see

i would damned near bet if you did a soil PH test it would be almost 8.0 ,from everything you have said ,you just keep adding lime and you can put to much lime in .even though you are 1.1 soil and coco you still need a soil medium at the highest 7.0 which is neutral .not one time have i read you have checked your runoff since you first started thread .you can put PH water in all day, but if your not adjusting that to buffer the very hot medium all your doing is making it worse .suggestion do a soil PH test see were you stand ,it will also tell you were you are on NPK and you might be able to adjust but you need to no were you are at

I don't have a soil ph tester and don't know where to find one the problem is pretty bad today

according to my test strip hot tub strip it shows the alkaline level at 180 ppm the ph is showing orange at 6.8 stabilizer low chlorine low so the ph doesn't appear high

420newbieg said:

Ok so I have 3 plants in soil/coco I used fox farm soil mixed in some ash guano alil lime and compost. using 600w of light 400w hps and some side lighting.

im 4 weeks into flowering and I have noticed that my plant in the middle the big buddah cheese in a 7 gallon pot the leaves have turned yellow mostly the lower ones at first then they started to die off.

I am doing a scrog so I dident focus much on the growth under the screen I gave them some big bloom 2 times at once a week dose I had figured that the last time maybe I gave them alil too much.

so I flushed last week all 3 plants and since then it seems like mostly the bbc is turning yellow the main cola bud leaves a cple have turned yellow and tips brown and curled up crispy.

The rest are mostly clawed downwards a couple bud leaves have straightened out and point straight across but I am worried my 707 headband looks kinda yellow aswell.

What is funny is that a plant I got from someones outdoors that was supposed to be some kind of cheese which was a runt I some how have fairly green leaves on that fatter buds.

Keep in mind the runt dident come from a seedbank and I haven't been giving it as much water as the other plants the headband is in a 5 gallon also but started out as a bigger plant so I was giving it a decent amount of water.

So any ideas on this would help me a lot as I don't wanna ruin my crop and loose yield.

the 2 bigger plants have smaller bud then the runt but they have more branches id say. the runt I also snapped a couple branches off while trying to tuck under the screen before going to 12/12. so I don't know if that has anything to do with it.

I have also trimmed off the lower growth below the screen. the 2 cheese plants I dident top yet the bbc and the headband that I topped have almost the same size buds.

I just finished the 4th week yesterday. heres some pics too

Click to expand...

i justed shack my head when i read these comments lol that there my friend is it starting to pull all nutes from the plant to make buds it is a little to yellow for my likeing but whats your ppm atm u can A rasie the ml rate of ur nutes or like buds said get some nice soil B u can always add some veg nutes to ur flower nutes to green them up again just add veg nutes on top of what u are feeding them now just 1 ml should do it C is u can get like go green or dr fix

ok so I checked some leftover run off water and it was high 7.8 like red color and the alkaline level at 180 ppm. so I must have dressed with just alil too much lime .

so if I watered with more acidic water say 5.8 -5.5 would that help me out maybe lower the ph.

im gonna be in trouble everything is wanting to go yellow and brown curl up ward and just fall off