Help please - Are cold temps the reason for new growth going purple?

GreenAndTastey said:

I'm sure over time I'd get used to it, but it seems like something you need to have a bit more experience than 46 days of tending plants to get right, having a meter gives me something to aim for until I know how it should feel

Other than that, whats your thought on how shes looking? I'm thinking this yellowing might be a bit early for mid week 3 of flower on an autoflower? I expected another 3-5 weeks until chop at least

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There's a decent bit of nute burn going on. But all in all doesn't look to bad. Its just the one leaf yellowing? I wouldn't be too concerned. If it progresses it might be a nitrogen deficiency.

Your plant won't be done in 3 weeks. I dont think I've seen a plant finish that fast in flower.

I've seen people chop early. But it wasn't finished.

Wizzlebiz said:

There's a decent bit of nute burn going on. But all in all doesn't look to bad. Its just the one leaf yellowing? I wouldn't be too concerned. If it progresses it might be a nitrogen deficiency.

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There's a couple really, but the others aren't getting light at all, they're on the main stem and completely covered by the rest of the leaves and it's bushy all the way up so I thought maybe lack of light

Would burning a leaf out as much as that big one cause a plant to cannibalise it? Or should I be thinking about adding a high N fert to help her finish in flower instead of just bio bloom?

GreenAndTastey said:

There's a couple really, but the others aren't getting light at all, they're on the main stem and completely covered by the rest of the leaves and it's bushy all the way up so I thought maybe lack of light

Would burning a leaf out as much as that big one cause a plant to cannibalise it? Or should I be thinking about adding a high N fert to help her finish in flower instead of just bio bloom?

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I honestly wouldn't do anything right now. I'd watch it and see if it continues. When did this start?

Wizzlebiz said:

I honestly wouldn't do anything right now. I'd watch it and see if it continues. When did this start?

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Today, looked burned but green this morning, came home from work to swollen buds with brown hairs and some yellowing leaves (now I type it out I'm thinking she's pulled N from the leaves for the bud growth spurt) if it wasn't for the yellowing leaves I'd be a happy little grower, if it was week 5 of flower, I'd probably be okay with it but considering there's a while left, figured some experienced eyes were needed

Watered with ph'd water, 50% distilled 50% tap (my tap water is really high in minerals hence the dilution) until run off that was 6.5

I use a Wooden bbq squire like a wooden dowel. With a point on it stab that in if it’s wet dirt sticks if it’s dry dirt doesn’t stick.

GreenAndTastey said:

Today, looked burned but green this morning, came home from work to swollen buds with brown hairs and some yellowing leaves (now I type it out I'm thinking she's pulled N from the leaves for the bud growth spurt) if it wasn't for the yellowing leaves I'd be a happy little grower, if it was week 5 of flower, I'd probably be okay with it but considering there's a while left, figured some experienced eyes were needed

Watered with ph'd water, 50% distilled 50% tap (my tap water is really high in minerals hence the dilution) until run off that was 6.5

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Like I said feed them to runoff. 20%

myke said:

Like I said feed them to runoff. 20%

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This. You might have some salt build ups throwing shit off a bit. Feeding to runoff is extremely important.

Wizzlebiz said:

This. You might have some salt build ups throwing shit off a bit. Feeding to runoff is extremely important.

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myke said:

Like I said feed them to runoff. 20%

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Will a Bloom nute suffice this far on or should I be adding a High Nitrogen NPK as well?

GreenAndTastey said:

Will a Bloom nute suffice this far on or should I be adding a High Nitrogen NPK as well?

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If the yellowing continues id add a small dose of nitrogen. Dont over do it. It can also cause issues if you give too much.

What nutes are you using?

Wizzlebiz said:

If the yellowing continues id add a small dose of nitrogen. Dont over do it. It can also cause issues if you give too much.

What nutes are you using?

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Bio-Bizz bloom now I'm in flower (which is why I wasn't always bothered about the lack of runoff, their website says it's not needed (But I'll 100% take your word for it over theirs))

Early on none, then a generic 1-1-1 in veg (I know but the budget got maxed out on lights carbon filter and building the cabinet, next one will have actual veg nutes)

There's been a good amount of Humic and Fulvic acids added to the soil, although I haven't applied this in about 10 days

GreenAndTastey said:

Bio-Bizz bloom now I'm in flower (which is why I wasn't always bothered about the lack of runoff, their website says it's not needed (But I'll 100% take your word for it over theirs))

Early on none, then a generic 1-1-1 in veg (I know but the budget got maxed out on lights carbon filter and building the cabinet, next one will have actual veg nutes)

There's been a good amount of Humic and Fulvic acids added to the soil, although I haven't applied this in about 10 days

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I suggest getting the biobuzz schedule and line of nutes and follow it begining at 25% of the recommended values.

Cut back on the flower nutes. Give a small amount of that 1-1-1 for now. But get the veg nutes. The npk is 4-3-6 and is fairly balanced.

Here's the schedule.

Notice they have bio-grow and bio-bloom running until week 10.

Again I suggest cutting back on the bloom nutes as they are burning your plants.

Wizzlebiz said:

I suggest getting the biobuzz schedule and line of nutes and follow it begining at 25% of the recommended values.

Cut back on the flower nutes. Give a small amount of that 1-1-1 for now. But get the veg nutes. The npk is 4-3-6 and is fairly balanced.

Here's the schedule.
View attachment 4769192
Notice they have bio-grow and bio-bloom running until week 10.

Again I suggest cutting back on the bloom nutes as they are burning your plants.

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I'll definitely cut back on the bloom, I'll see if I can get them shipped here still, we've gone back into lockdown here so I can't leave my city. If not I'll look for something closer to those NPKs in the garden centre (not ideal again I know)

I've got at least 24 hours before I can water again. I gave a decent water this morning because ya the burn was real this time

This was one of the things I was going to do different next time, I'd read 1-1-1 would be okay but I know it would do better with proper nutrients in veg

Appreciate you taking the time to talk me through all this man

Over time youll find some powdered nutes somewhere. my local hydro store sells dry stuff its a 3 part 1-2 veg and 2-3 bloom cheap and saves me from paying for water.I mix them like 100grams per litre water,then i use 1 ml/litre=about 1EC.
Dont forget your calmag also,look for a low N one like 1-0-0.

hotrodharley said:

When you transplant pick up the container before adding any moisture. Lift it multiple times. Transplant and water. Pick it up again multiple times. It won’t take you long and you’ll know when it’s getting dry enough to actually need water. Watering too frequently usually results in short roots

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That doesn't work well with 15 gal pots, lol.

GreenAndTastey said:

Bio-Bizz bloom now I'm in flower (which is why I wasn't always bothered about the lack of runoff, their website says it's not needed (But I'll 100% take your word for it over theirs))

Early on none, then a generic 1-1-1 in veg (I know but the budget got maxed out on lights carbon filter and building the cabinet, next one will have actual veg nutes)

There's been a good amount of Humic and Fulvic acids added to the soil, although I haven't applied this in about 10 days

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If you're growing all organically you don't want runoff unless you have problems.

PadawanWarrior said:

That doesn't work well with 15 gal pots, lol.

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Lol, ya when dry they gotta be 40-50 lbs? wet....forget about it!

PadawanWarrior said:

If you're growing all organically you don't want runoff unless you have problems.

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I'm not intending to grow organically I just happen to be using an organic nute, the 1-1-1 I mentioned certainly wasn't organic, I don't know enough to have an opinion on what's better

myke said:

Lol, ya when dry they gotta be 40-50 lbs? wet....forget about it!

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Ya. I dread moving them. I have a handcart to move them upstairs or downstairs when I need to, but lately I've just left the same 6 pots in my room and I just rotate them. They're extra heavy since I added lava rock. That shit is heavy. I've been using more pumice instead lately since it's lighter.

GreenAndTastey said:

I'm not intending to grow organically I just happen to be using an organic nute, the 1-1-1 I mentioned certainly wasn't organic, I don't know enough to have an opinion on what's better

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OK. If you're using chems than ya runoff is good.

Just a side thought I had today about this, I was doing some checks today and noticed from the top, you can't see the leaf that's going yellow at all. Is there any chance this is just a lack of light and the plants pulling the nitrogen instead of having a leaf not really photosynthesising but using up energy staying alive?

Still going to give a little of the 1-1-1 tomorrow and make sure I get run off this time just to be sure, but wondered if this was a simple light penetration situation?