plant with biggest nugs is yellow

[wordtotheherb]

i have four white rhino from ghs on the go. the flights were switched to 12/12 about six weeks ago.

they are on vita link max nutes with vita link buddy booster, i have been using pk13/14 for the last 10 days at half strength instead of the buddy. ec is currently 1.8 (this is the highest its been)

they are in clay pebbles in a flood and drain system under a 600w hps.

one plant is completely green and has the smallest flowers. two have fairly decent sized flowers and the leaves have slightly yellow tips but one (the one in the pics) has by far the biggest nugs but looks by far the most unhealthy! the lower half of the plant has completely green leaves which ure curled under at the edges.

the first pic is a leaf i cut off and is taken away from the hps but the other two are taken under the hps (sorry)

has anyone got any ideas?

they are all in one tray so are fed the same and have been bent and snapped during the stretch so everything is at the same height.

is this what happens when you grow from seed because every plant is different?

 

[cyberwax]

More info needed.

What is the ph and what has it been throughout the grow? To me this looks like a ph lockout that has happened a week ago.

 

[wordtotheherb]

sorry should have written that the ph in the res is set to 5.7 and allowed to rise to 6.2

it has never gone below 5.6 and never above 6.3

the plant has got steadily worse over the last few weeks, since introducing the boost probably but the buds have been swelling better than all the others. like i say though one plant is completely green and fed through the same res.

 

[msd828]

I'm thinking there alright. Most plants get slight nute burn on the way out and that's ok. Also the leaves are prob yellow from lack of nitro, which also is part of the cycle. I would just heavy dose them for another week and then flush for a week and ur all wrapped up. Prob not to much to stress over.

 

[cyberwax]

I'm thinking there alright. Most plants get slight nute burn on the way out and that's ok. Also the leaves are prob yellow from lack of nitro, which also is part of the cycle. I would just heavy dose them for another week and then flush for a week and ur all wrapped up. Prob not to much to stress over.

I would recommend against that, first of its normal for plants late in flowering to show nitrogen deficiencies on the fan leafs but not like this. This lockout will affect both taste, potency and yield, nitrogen deficiencies that are normal does not affect the bud in this kind of fashion, as the plant uses stored up energy in the leafs to juice up the buds themselves.

Again; this is probably ph releated, are you using drops or pen? If pen; are you sure its calibrated?

 

[wordtotheherb]

i use a ph pen, it is about 5 months old and has been dropped in my res twice but survived.

i have buffer solution and it does appear to calibrate.

if its ph would my other plants not be suffering? like i say one is lush green and fed from the same res.

the leaves on the ones in the pic are quite crispy and brittle.

 

[msd828]

I would recommend against that, first of its normal for plants late in flowering to show nitrogen deficiencies on the fan leafs but not like this. This lockout will affect both taste, potency and yield, nitrogen deficiencies that are normal does not affect the bud in this kind of fashion, as the plant uses stored up energy in the leafs to juice up the buds themselves.

Again; this is probably ph releated, are you using drops or pen? If pen; are you sure its calibrated?

How are you gonna reccomend against something when you have no idea what the answer is. Your guessing just like I am. Don't be a clown and just put down other peoples ideas because you THINK its a ph imbalance.

If his ph is in the right area, he should def heavy dose them on the way out and ignore the burn. And that's IF its not ph imbalance.

 

[wordtotheherb]

just to add the plant in the picks is just starting to get slight browning of pistils (i know the trichs are the true way to tll hen it ready but i dont have a microscope)

the other 3 plants seem to be lagging behind so i guess i could pull this one early. i reckon its still got 2 weeks of nutes left befre the flush but i'm only guessing.

wont the plant struggle to take in light if the leafs are this battered?

 

[bombadil.360]

how is your relative humidity in there? how good is the ventilation? temperatures and its fluctuations? are they getting enough light?

btw, nute burn is never alright, the idea is never to over-feed.

good luck!

 

[msd828]

just to add the plant in the picks is just starting to get slight browning of pistils (i know the trichs are the true way to tll hen it ready but i dont have a microscope)

the other 3 plants seem to be lagging behind so i guess i could pull this one early. i reckon its still got 2 weeks of nutes left befre the flush but i'm only guessing.

wont the plant struggle to take in light if the leafs are this battered?

It prob won't get 100 percent of the proper nutes with ur leaves like that, but ur feeding them nutes so there getting a lot just in general. There's nutes in the roots, plant body, nugs, medium etc. If u were in week 2 ud prob be in trouble, but since u only got a couple weeks left and u say ur ph is good, heavy dose them. Burn on the way out is not a big deal, regardless of what people may say.

 

[wordtotheherb]

humidity between 30-50%
temp 26c lights on (28c max) 18c lights off (15c min)
5 inch rvk extractor for 1.5 square meters with fan speed controller
12hours of light from a 600w hps

i'd just like to stress thats its one plant from 4 of the same stain that is suffering. i dont want to flush as the other 3 deff dont need it. i'm really wanting to know whats wrong with it though! is it burnt or locked out or defficient in something and if so then what and why?

 

[SumDumGuy]

Hi,
Have you been supplementing Calcium. Like CalMag. I'd sat Nitro def but the veins are too dark and I can already see the rusty spots indicating a Calcium def.

I love this site.. You guys are this Shiznit!!

 

[wordtotheherb]

no calcium supplement.

just A and B feeds and booster

should i be using extra supplements as a general rule?

 

[cyberwax]

How are you gonna reccomend against something when you have no idea what the answer is. Your guessing just like I am. Don't be a clown and just put down other peoples ideas because you THINK its a ph imbalance.

Like you do in this exact post/quote? The reason why im recommending against it has nothing to do with you but the suggestion your making, never have slamming my plants with nutrients fixed anything.

If his ph is in the right area, he should def heavy dose them on the way out and ignore the burn. And that's IF its not ph imbalance.

Exactly, like checking and making sure that the ph is proper before doing anything else? I clown down my posts and suggestions based upon experience, unless im beeing a dick; like now, also with experience. And wtf dude is up with this hostility? Im trying to help here, i suggest you do the same.

 

[SumDumGuy]

no calcium supplement.

just A and B feeds and booster

should i be using extra supplements as a general rule?

For future grows remember this: Cal/Mag is JUST as important as P/K. Specially during late flowering. If you're just about done with the grow there's really nothing much I can say because it will take a plant at least 2 weeks to bounce back from a deficiency and lets not forget you need a week to flush. If you have 2 weeks left in bloom then ride or die baby.. She doesn't look shot though. I was initially going with Nitrogen deficiency but the veins are dark as you see in the pics. A pH imbalance can most definitely cause this but you said your device is calibrated and I'll take your word for it. Nonetheless she'll be a nice plant but keep in mind issues like these in late flowering affect the end result. Whether slightly or alot.

 

[SumDumGuy]

Hey Cyberwax and msd828,
Walk 1000 paces forward and turn the corner - I'll be wearing a fedora with gold sunglasses and a backpack full of weed.

Our mission: To smoke ALL THE WEED

 

[wordtotheherb]

cool man, cheers.

i'm going to completely change nutes and start using enzymes and whatever other bits are going to help next time round.

this is my second grow so i'm still learning, i've read alot but the only way t o learn is to do!

i only used A and B grow and flower last time, not even any boost.

if i had added calmag on this grow, you are expecting hat this plant would look healthier i guess, could it of had a bad effect on the other 3 which look healthy (apart from slightly yellowing tips on 2 of them)

 

[msd828]

Like you do in this exact post/quote? The reason why im recommending against it has nothing to do with you but the suggestion your making, never have slamming my plants with nutrients fixed anything.



Exactly, like checking and making sure that the ph is proper before doing anything else? I clown down my posts and suggestions based upon experience, unless im beeing a dick; like now, also with experience. And wtf dude is up with this hostility? Im trying to help here, i suggest you do the same.

My hostility comes from u quoting me then reccomending against my quote. My suggestions to come from my own experience. So instead of claiming other people are wrong, maybe just put in your input instead of trying to point out something you don't know.

 

[wordtotheherb]

i appreciate all replies but lets not turn my thread into a boxing ring please!

 

[bombadil.360]

heavy dose them. Burn on the way out is not a big deal, regardless of what people may say.

burning a plant with nutes before harvest is what a noob would do, no doubt about that, you will not find support for this view from any experienced grower.


wordtotheherb, if only one plant is looking sick, and your pH is right as well as your feeding, and the other plants are not yielding as much as the sick-looking plant, then there is the possibility that the strain you are growing is not stable, uniform nor very good.

also, your temperature fluctuations are pretty big. 28 C down to 18 C is a lot. I would try to keep the temperature while the light is on lower for sure.

you grew the plants from seed or cuttings?

did you check the roots?

but if all is well, then you gotta consider trying other sort of seed for the next grow to avoid these issues.

good luck man.

peace