Yellowing and brown spots going into week 7

[GnomishViking]

Need some advice on my not so well plant. Started week 7 today and it is a 8-9 week strain. The yellowing I have been battling right after I flipped to flower and already had to chop my other plant down last week as the yellowing and brown spots where getting far to bad for it to make it to harvest. I am growing in soil with 5 gal grow bags and using synthetic nutes and have been giving it calmag a few times, but nothing really seems to help. I do a water-feed-water schedule and give a little less than 1 gal every time for the 5 gal grow bag and I try my best to wait tell the soil is completely dry before I water again.

I put in distilled water last week and the run off PH came back at 6.5 and the ppm was right around 1000. Temps and PPFD have been in normal ranges as well.

Not really sure why it is doing this. To me it looks like calmag, deficiency and a nitrogen deficiency, but I have been giving normal amounts of both and my run off measurements dont seem to indicate a lock out issue. I am mainly wondering if it will make it another 2 weeks and if there is anything I can do to help maintain the plant tell harvest. So far the buds look good, but I worry they will also start to be affected soon.

 

[JIMKSI64]

I had a plant that had 3 inches of the pot die because of a simple mistake. I took it to the end and it looked horrible.
I am smoking it right now. Sure looked harsh and I was brutal on the trim but the plant gave me 90 grams of smoke.
what kind of synthetics and does it recommend a flush like FF trio?
We

 

[Mannitu78]

but I have been giving normal amounts

whats a normal amount? What fertilzer excatly and how much per liter water?

Also a pretty inefficient setup, meaning waste of space and energy. I can see you dont live in Germany.


the run off-measurement is pretty high, i mean pretty alkalic. 6,5 is pretty much just a tiny bit more acidic than tap water. And the soil itself without nutes is probably around that 6,5 range or even lower. A this point late in flower its usually more acidic when using mineral nutes.

 

[GnomishViking]

whats a normal amount? What fertilzer excatly and how much per liter water?

Also a pretty inefficient setup, meaning waste of space and energy. I can see you dont live in Germany.


the run off-measurement is pretty high, i mean pretty alkalic. 6,5 is pretty much just a tiny bit more acidic than tap water. And the soil itself without nutes is probably around that 6,5 range or even lower. A this point late in flower its usually more acidic when using mineral nutes.

I have been following the feeding chart that came with my nuts brand, the chart goes off of nuts per 1gal of water. Typically give 80% of what the recommended dose is on the chart. Whats so waste full about my set up? It's a 3x3 tent. I started with 4 plants, two ended up male and my one female didnt make it to harvest.

 

[GnomishViking]

I had a plant that had 3 inches of the pot die because of a simple mistake. I took it to the end and it looked horrible.
I am smoking it right now. Sure looked harsh and I was brutal on the trim but the plant gave me 90 grams of smoke.
what kind of synthetics and does it recommend a flush like FF trio?

Yours looks similar to mine. What was your mistake you made? Also was the end product still decent despite the issues?

 

[Mannitu78]

I have been following the feeding chart that came with my nuts brand, the chart goes off of nuts per 1gal of water.

can you still tell me the exact number or tell me what product it is, please? id like to compare the numbers to mine and see if its really as low as the ph says. I wouldnt care too much about the feeding schedule on these products anyway, better calculate the numbers. Very often they are way to high, in your case they aseem to be more conservative, at least if 6,5 is right. reading PH in a accurate way is not as easy anyway. Not as easy as the digital device makes you think.

Whats so waste full about my set up? It's a 3x3 tent. I started with 4 plants, two ended up male and my one female didnt make it to harvest.

ah that explains the empty space. What happened with the female that "didnt make it"?

 

[JIMKSI64]

White widow photo.
I had to plants that were about 2 inches in hight different. I wanted to even it out so I took a bucket lid and dilled holes in it it gave me about 1.5 inches.
I have a bad back and had my wife help me. I listed the pot up and told her to put the lid under the pot on top of the drain grate
She put a new bucket lid undrilled and I did not see her grab the undrilled lid.
Buy aggressively trimming off the discolored parts for special brownies ( 1.0 oz ) I was left with perfectly smokeable although light airy buds that are still very oily and the red hairs sizzle in a bowl.

 

[GnomishViking]

can you still tell me the exact number or tell me what product it is, please? id like to compare the numbers to mine and see if its really as low as the ph says. I wouldnt care too much about the feeding schedule on these products anyway, better calculate the numbers. Very often they are way to high, in your case they aseem to be more conservative, at least if 6,5 is right. reading PH in a accurate way is not as easy anyway. Not as easy as the digital device makes you think.




ah that explains the empty space. What happened with the female that "didnt make it"?

Mega Mass Plant Products

(click for printable version)

www.incredigrow.ca

This is the brand and feeding chart I use. For example the feed I did yesterday going into week 7 I did 12ml/g of the blend and 15ml/gal of the bloom.

I mentioned in my post the other plant had the same issue, but maybe I didnt write it clear enough. The other female had far far worse brown spots and yellowing, to the point that I could see it getting worse day after day and there was no way it would have made it to the end.

 

[Grownsince95]

It just needs more food. It's in peek demand right now. I see signs of N K Ca and Mg deficiency. There's no way you locked all those out at once with just mild symptoms.

If they were my plants I would go to 100% of what your food recommends.

They're gonna be fine. Totally normal for the plant to sacrifice the fans for the flowers.

 

[GnomishViking]

It just needs more food. It's in peek demand right now. I see signs of N K Ca and Mg deficiency. There's no way you locked all those out at once with just mild symptoms.

If they were my plants I would go to 100% of what your food recommends.

They're gonna be fine. Totally normal for the plant to sacrifice the fans for the flowers.

This is my 4th grow for myself so I am still kinda figuring things out. I am sort of suspicious that these 5gal grow bags perhaps are a little too small for a medium large plant? I like to train them so they have multiple large tops instead of a single large one or two, and I imagine having more large tops means that it is going to be needed more food and the smaller bag doesnt help.

 

[Grownsince95]

I've never mixed soil and synthetic nutes before so IDK if pot size would have made a difference. If you like to tinker and measure and feed them a lot switch to synthetics and coco like I did.

It satisfies the need to fuck with them all the time and once you learn enough not to kill them the results are very consistent.

 

[Ninjadogma]

I've never mixed soil and synthetic nutes before so IDK if pot size would have made a difference. If you like to tinker and measure and feed them a lot switch to synthetics and coco like I did.

It satisfies the need to fuck with them all the time and once you learn enough not to kill them the results are very consistent.

I don't think it's ever a good idea because you're stacking in unknown quantities based on soil nute availabity. That said, I've done it but did veg with soil nutes and then fed with liquids in flower and it didn't go all THAT horribly BAD but it's hard to manage the unknown, and a switch from passive to active monitoring for feeding rather than being able to rely on any system.

 

[GnomishViking]

I've never mixed soil and synthetic nutes before so IDK if pot size would have made a difference. If you like to tinker and measure and feed them a lot switch to synthetics and coco like I did.

It satisfies the need to fuck with them all the time and once you learn enough not to kill them the results are very consistent.

I would like to try coco, but since I only have reg seeds right now I feel like it would be alot of watering and feeding for coco just to cull a bunch of them after flip to flower. At least with soil it's not as constantly hands on as coco.

 

[GnomishViking]

I don't think it's ever a good idea because you're stacking in unknown quantities based on soil nute availabity. That said, I've done it but did veg with soil nutes and then fed with liquids in flower and it didn't go all THAT horribly BAD but it's hard to manage the unknown, and a switch from passive to active monitoring for feeding rather than being able to rely on any system.

I was told that synthetics is fine with soil as long as you give it less than what the feed chart asks for since soil will hold onto the nutes more than coco and you dont want to risk salt build up.

 

[Grownsince95]

And I was told when you grow with soil you only ever have to add water, and once they start to flower you sprinkle some magic blood and bone dust on the top and you're good.

And apparently any herbivore poop is awesome. Especially the Chinese bat guano.

So your bag soil is "out" of food after 4 weeks and now you're supposed to guess how much synthetics to feed it? When now you're basically trying to grow hydro while the soil still has buffering agents in it constantly raising the pH? No thanks.

Sorry for the rant. It's Friday night

 

[GnomishViking]

Sorry for the rant. It's Friday night

Dont apologize, wasn't a rant. Im eager to learn anything and everything I can as I love this hobby. I am wanting to do an organic living soil grow soon, I am only still using synthetics in soil as it is what I started with and is what I have on hand. Some of the fancy dry amendments people use in their organic grows can cost a fair bit upfront.

 

[Mannitu78]

@ Gnomish Viling:

Now listen, you may wanna hear this. That Grow Fertilizer has a ratio of 1-2-5. That is the lowest for nitrogen that i have ever seen, at least for a growphase-fertilizer. 1% Nitrogen, that means if you put 1ml/ liter you get 10ppm, if you put 1ml/gallon you get about 2,5ppm N, if you throw in 12ml/Gallon like you did, were talking about 30 ppm N. Or, likewise, its the same as using a fertilizer with 3-3-3 and putting in 1ml/Liter. And it may not even been useable right away, i dont know what source of N they use exactly, might be that 50% take a few months to be available.

Let me give you a little comparison, im using a all purpose-ferrtilizer with 6-4-7 ratio and im using 2ml/ Liter (thats about 7ml/ Gallon. That gives me 120ppm of N in the watering. This is a very conservative serving, that i extrapolated from Buckbees Recommendation. His tip is 0,6ml/LIter of a fertilizer with 20-10-20 ratio. So very little fertilizer, but a very strong one. Im ending up in the same ballpark, roughly, i get a little more Potassium.

I used way more than that and had nutrient lockouts that set in 4-5 weeks into grow. Since im doing that everything is perfect, thick growth, perfect colour, they dont show signs of def. until maybe a week before harvest, thats perfect for me. When im using Biobizz Organic, i use about the same amounts, 2ml of growth/liter over the whole grow and adding 1 ml Bloom at flower. Most people use more than me.

Without a doubt your nitrogen /30ppm, probably only 15-20ppm available is without a doubt even for the most conservative Growers wayyyyyy to low. You should start with 3 times the amount. Thats still not much. That would be like using 1ml/Liter of a Fertilizer with 9 Nitrogen.

Thats why your PH is so high. I also dont understand their recommendation for PH, 6.8-7,3 for soil, thats fucking nuts. Most soils come between 5,6 and 6.3. Look at the package. This is ridicolous.

edit: or, they mean not runoff water, but serving ph. Would be abit more reasonable, but still to high. Thats basically tapwater without anything in it.

 

[GnomishViking]

@ Gnomish Viling:

Now listen, you may wanna hear this. That Grow Fertilizer has a ratio of 1-2-5. That is the lowest for nitrogen that i have ever seen, at least for a growphase-fertilizer. 1% Nitrogen, that means if you put 1ml/ liter you get 10ppm, if you put 1ml/gallon you get about 2,5ppm N, if you throw in 12ml/Gallon like you did, were talking about 30 ppm N. Or, likewise, its the same as using a fertilizer with 3-3-3 and putting in 1ml/Liter. And it may not even been useable right away, i dont know what source of N they use exactly, might be that 50% take a few months to be available.

Let me give you a little comparison, im using a all purpose-ferrtilizer with 6-4-7 ratio and im using 2ml/ Liter (thats about 7ml/ Gallon. That gives me 120ppm of N in the watering. This is a very conservative serving, that i extrapolated from Buckbees Recommendation. His tip is 0,6ml/LIter of a fertilizer with 20-10-20 ratio. So very little fertilizer, but a very strong one. Im ending up in the same ballpark, roughly, i get a little more Potassium.

I used way more than that and had nutrient lockouts that set in 4-5 weeks into grow. Since im doing that everything is perfect, thick growth, perfect colour, they dont show signs of def. until maybe a week before harvest, thats perfect for me. When im using Biobizz Organic, i use about the same amounts, 2ml of growth/liter over the whole grow and adding 1 ml Bloom at flower. Most people use more than me.

Without a doubt your nitrogen /30ppm, probably only 15-20ppm is without a doubt even for the most conservative Growers wayyyyyy to low. You shouldf start with 3 times the amount. Thats still not much. That would be like using 1ml/Liter of a Fertilizer with 9 Nitrogen.

Thats why your PH is so high. I also dont understand their recommendation for PH, 6.8-7,3 for soil, thats fucking nuts. Most soils come between 5,6 and 6.3. Look at the package. This is ridicolous.

Not sure I 100% follow, I am no longer using the 1-2-5 as that is for veg. I am using the Blend which is 2-0-0 and the Bloom which is 0-4-4. Even when you are using the Grow 1-2-5 in veg you are still adding in the Blend for a total of 3-2-5.

 

[Grownsince95]

Dont apologize, wasn't a rant. Im eager to learn anything and everything I can as I love this hobby. I am wanting to do an organic living soil grow soon, I am only still using synthetics in soil as it is what I started with and is what I have on hand. Some of the fancy dry amendments people use in their organic grows can cost a fair bit upfront.

Your flowers look great! Don't sweat the small stuff.

Like they say in the film business, most of it winds up on the cutting room floor anyway

 

[Mannitu78]

Not sure I 100% follow, I am no longer using the 1-2-5 as that

ah ok sorry you got me, i got so agitated i didnt realize you take a whole package...Im familiar to only using grow fert. in Growth , or a single All-Purpose.
Yeah, if you add the blend you come in somewhat more reasonable regions. Pretty annoying company, selling you a whole bunch of products with a very tiny percentage of nutrients. My fertilizer is 2,50eu for a 500ml Bottle and thats all there is. Man you better bring a pretty big scoop for the fertilizer when its watering time. 3 different bottles and your only at 3-2-5.

What remains is the pretty high PH-recommendation imo.

You can calculate yourself. 120ppm on Nitrogen is good and at the lower end imo. Bugbee has a good vido on how to make the perfect soil and how much fertilizer to use. He also doesnt advise you to use these fertilizer "Clans", just an all purpose with a somewhat right balance. Not that i believe everything he says, but i appriciate that video. Did very good for me.


i didnt use 50% vermiculite and 50% peat though, that was a little over the top for me. Using 80% peat and 20% vermiculite.

man editing for the 5th time now. im a wreck.


ah and to the topic, your first suspicion was probably right, you are on the very low side with nitrogen. Using a little less is in most cases good, but a better way is to calculate this number. This companies recommendation is so that youre "just ok"..(i didnt look for potassium and phosphor).
Which is understandable, theyre selling you a very thin soup. Get a cheap all purpose fertilizer from the supermarket with a high amount of N and add a little of that. I dont know if it makes a difference when youre already weeks in flower. But wont hurt you. And for the future.