Ph flush or deficiency opinions?

[Brenden302]

This is Barney's farm LSD auto around 68 days, I have brown rust spots, I'm thinking a flush of my soil is needed? Looks like "cal mag deficiency, but it's only my third grow. Looking for second opinions, I'm going to flush the soil, 3 gallon pot with 9 gallons of pH plain water and reintroduce nutes at 1/4, thinking soil lock out? I tested my run off pH and it's 6.1 and I always water with a pH of 6-7. Maybe salt build up in soil?

 

[breedwheel]

Cal mag always fixes it... I maybe would add a little though. I don't think you are anywhere near a nutrient lockout or in need of a flush. Keep an eye on your pH consistancy. Are only the top leaves light and yellowing? What nutes and how much too?

 

[Brenden302]

Cal mag always fixes it... I maybe would add a little though. I don't think you are anywhere near a nutrient lockout or in need of a flush. Keep an eye on your pH consistancy. Are only the top leaves light and yellowing? What nutes and how much too?

Mostly top leaves but bottom ones a little as well, so I also highered my lights a little, I'm using fox farms trio, grow big at 1/4 strength- liquid bloom also 1/4 and Tiger bloom at 1/3 since it's flowering, I pH the water to just about 6.2-6.7 maybe the highest ever I go.

I also water everyday since my soil, roots organics green lite dries out fast, I also have burnt tips so I know it's getting nutrients

 

[mysticepipedon]

What is your medium? What do you think you will achieve by a flush?

I think this is a Ca deficiency.

 

[Brenden302]

What is your medium? What do you think you will achieve by a flush?

I think this is a Ca

That's what I believe too, that's why I was looking for a second opinions before I did all that work to flush it, I'm going to pick up Cal mag and use that to see if it improves first, My soil medium is root organic green light, it dries fast and is very aerated

 

[Brenden302]

Bought sensi cal mag extra, today they look like this? I feel I'm going to lose this one and I can't figure it out this time

 

[breedwheel]

That still looks like a cal deficiency. Are they looking any better?

 

[Brenden302]

Well they improved for a day or two, then I opened my tent and this, I'm close to just chopping it early, or doing a massive flush of the soil, I added cal mag, pH still within range, must be something in the soil. And now I have to worry about bud rot from dead leafs

 

[breedwheel]

Your buds look like they have plumped up considerably over the past six days. Is it still drinking as much or even more? How much light are you putting on it? Leaves look bad. Too much light can cause leaves to curl up and have heard it will almost always cause cal deficiency. I wouldn't think about chopping early at all unless she quit drinking totally.

 

[breedwheel]

I forgot to ask what week of flower?

 

[Brenden302]

Your buds look like they have plumped up considerably over the past six days. Is it still drinking as much or even more? How much light are you putting on it? Leaves look bad. Too much light can cause leaves to curl up and have heard it will almost always cause cal deficiency. I wouldn't think about chopping early at all unless she quit drinking totally.

I did notice the buds are still nice and green and fatten up, I did another good flush of my soil, and left it with just plain pH water yesterday, today I may just give it plain water, I'm not sure yet. I did higher my lights about an inch too, first time growing one plant when I normally have 2 in the tent with 2 lights, and as for week of flower I'm not 100% sure as I'm not home to look in my grow notebook

Forgot to add, thank you for any input you can give me

 

[Brenden302]

Just an update, did a flush and reintroduced nutrients and highered my lights had them at 13 inches was probably burning the leaves now at about 21 inches, I believe it was a combo of lights to low and my soil needed a flush for whatever reason, it has slowed and is fattening up good now, maybe a week or 2 and chopping this.

 

[Aqua Man]

They either locked out or need nutrients and i would agree the lights contributed significantly. At this stage your not going to fix it. The plants pretty much done growing new leaves and it will not repair the existing ones.

use the information you gained to prevent this next grow

 

[Brenden302]

They either locked out or need nutrients and i would agree the lights contributed significantly. At this stage your not going to fix it. The plants pretty much done growing new leaves and it will not repair the existing ones.

use the information you gained to prevent this next grow

Thank you, and definitely a learning lesson for me, I just hope this doesn't reveg or anything on me before I chop it....buds look to be foxtailing with little green leafs?

 

[Aqua Man]

Thank you, and definitely a learning lesson for me, I just hope this doesn't reveg or anything on me before I chop it....buds look to be foxtailing with little green leafs?

Just make sure you have no light leaks and keep environmental parameters in check. Thats all you can do. I highly doubt it w reveg but cant say its not a possibility.

often times heat stress can do that. By that i mean actual plant temps not room temps. plants with damaged leaves transpire less and that means higher plant temps. Plants convert excess light to heat (meaning more photons than they can use. Damaged leaves are abke to use less photon)

So keep the same light cycle but you may want to back it off even more. The plant doesn’t need a whole lot of photosynthesis at this stage as its stopped needing energy to produce new vegetation and gone full reproductive mode developing buds, trichs etc.

You goal should be trying to keep this from getting worse and that to me likely means cutting back in light intensity to get them across the finish line.

thats my opinion on your situation. I can’t claim its 100% your issue but to me it’s extremely likely

 

[Brenden302]

Just make sure you have no light leaks and keep environmental parameters in check. Thats all you can do. I highly doubt it w reveg but cant say its not a possibility.

often times heat stress can do that. By that i mean actual plant temps not room temps. plants with damaged leaves transpire less and that means higher plant temps. Plants convert excess light to heat (meaning more photons than they can use. Damaged leaves are abke to use less photon)

So keep the same light cycle but you may want to back it off even more. The plant doesn’t need a whole lot of photosynthesis at this stage as its stopped needing energy to produce new vegetation and gone full reproductive mode developing buds, trichs etc.

You goal should be trying to keep this from getting worse and that to me likely means cutting back in light intensity to get them across the finish line.

thats my opinion on your situation. I can’t claim its 100% your issue but to me it’s extremely likely

Thank you so much for that response, I appreciate it, I believe the issue is slowed or stopped, I'm leaning towards the light being way to close and me just being newer over looked this, learned my lesson. I'll keep them going for a little till chop, but again that k you for that knowledge