Always same problem in 4-5 week!!

[Heil Tweetler]

Please elaborate.

For starters, no one should declare _______ is always good. Because there is no mineral that is always good.
Before loading up your soil with Mg or any mineral you should have a soil test and know where you stand with regard to mineral ratios. Excess Mg will not support best health or potency for MJ.

 

[Seserth]

For starters, no one should declare _______ is always good. Because there is no mineral that is always good.
Before loading up your soil with Mg or any mineral you should have a soil test and know where you stand with regard to mineral ratios. Excess Mg will not support best health or potency for MJ.

How do you test soil ?

 

[Heil Tweetler]

How do you test soil ?

Read up on it bud. Its more fun and you grow better bud the more you learn. Local ag schools sometimes do inexpensive tests. Logan labs and Spectrum analytic are popular labs used by growers on various forums.

 

[MJCanada]

My call is your vinegar isn't stable, so your water going in at 6.0... doesn't last long enough for the plant to take any nutes.

The run off coming out at 7, when 6 is going in... tells me that vinegar is worse than I thought OR the soil PH is also very high... and if that's the case, you'll be fighting that problem the entire grow.

My suggestion:

- get proper PH down and up, stop using vinegar. PH up and down have buffers to help prevent the effect from wearing off... that vinegar either is reacting with something in the soil, or burning off and your PH is going nuts(most likely high 8+)

- flush your medium with 6.5 PH'ed water, using 3xpot size (5gallon pot = 15 gallons of water). This will reset your medium and flush out nutes sitting there not being used.

If the flush doesn't reset that soil PH, maybe repot with a better soil mix. Changing soil PH is not easy, and typically "using better soil" is just the way to go. Over time(let's say this was a backyard), you can lower it by using compost. For pots, just use composted organic soil amendments (e.g. worm castings) to help buffer the soil at a more neutral level.

There are some other suggestions I would make, but you seem like the typical first time grower(like me ) and if I suggest it, you'll do it 10x over, and just end up killing your girls

One piece of advice I keep repeating in my head every single day.... "Don't over love your girls..."

I think you've over loved in the nutes, and under loved in the most important spot... PH!

 

[Zefito]

My call is your vinegar isn't stable, so your water going in at 6.0... doesn't last long enough for the plant to take any nutes.

The run off coming out at 7, when 6 is going in... tells me that vinegar is worse than I thought OR the soil PH is also very high... and if that's the case, you'll be fighting that problem the entire grow.

My suggestion:

- get proper PH down and up, stop using vinegar. PH up and down have buffers to help prevent the effect from wearing off... that vinegar either is reacting with something in the soil, or burning off and your PH is going nuts(most likely high 8+)

- flush your medium with 6.5 PH'ed water, using 3xpot size (5gallon pot = 15 gallons of water). This will reset your medium and flush out nutes sitting there not being used.

If the flush doesn't reset that soil PH, maybe repot with a better soil mix. Changing soil PH is not easy, and typically "using better soil" is just the way to go. Over time(let's say this was a backyard), you can lower it by using compost. For pots, just use composted organic soil amendments (e.g. worm castings) to help buffer the soil at a more neutral level.

There are some other suggestions I would make, but you seem like the typical first time grower(like me ) and if I suggest it, you'll do it 10x over, and just end up killing your girls

One piece of advice I keep repeating in my head every single day.... "Don't over love your girls..."

I think you've over loved in the nutes, and under loved in the most important spot... PH!

Yes i think you right with the bloody vinegar..ok thanks so much for you info

 

[Buba Blend]

Hello fellow growers

I have read and studied the problems but with no avail. Have tried 5 different strains, autos and fems. The problems always start on week 4-5, were even after feeding leaves start going yellow and dry spots.

Small indoor grow tent

Lights 3 vero 29 150watts (50W each)

Soil 1/3 perlite, coco coir and bio bizz light mix

Temp 25-30c

RH 60-80%

Fertilizer Bio bizz line ½ strength (about 1-2ml of grow,heaven and acti vera)

PH 6 goes in 6.5-7 soil runoff

PPM 900-1000

5 week old

Strain Kaya Gold Nirvana (Specially suitable for high temps)

Thought it might be calmag, so I bought some.

All seems like PH problems but my PH meter is calibrated. I use vinegar to drop the tap water PH and not PH down product.

I have ran out of ideas.

Thank you

4 weeks into flowering is a common spot for problems to show up. Yours looks pretty advanced at this stage, hope it can make it to harvest.
Got a couple of suggestions for next grow.
Maybe try a different soil mix or some quality soil in a bag that people are familiar with, it would make it easier to diagnose why you run into problems at that stage.
Soil 1/3 perlite, coco coir and bio bizz light mix.
II'm a soil mix novice but it is almost like you have a mix that strays more towards a hydro grow than soil IDK.

Next grow take pictures of the whole plant each week even if they are healthy, referencing back can help tell the story.

 

[Dr. Who]

Yes, i read that mixing would give a lighter texture and drop the PH.So i did, and got a nice runoff of 6.5ph.thanks

The pH of any run off is not the pH of the media! It's simply the pH of the run off.

Only one person caught the soil and Coco mix.
I have to ask......What % of each to the total volume?

Bet your running your pH too high! High pH screws N up take.... Coco runs pH at 5.7-6.2, and is considered a hydro style - any soilless is hydro...

I have a soil formula that does use some coco.....1 small brick to 4 cubic feet. Not enough to vari the pH set of the soil but, enough to have some nice water retention in pre built soils that tend not to (FF soils).

I also see shit tons of folks having problems with bio bizz.....While it's one I haven't tried. I sure wonder about it...

The reading of a book - reflects opinions of the author. Jorge isn't always right......get my point...

 

[Dr. Who]

For starters, no one should declare _______ is always good. Because there is no mineral that is always good.
Before loading up your soil with Mg or any mineral you should have a soil test and know where you stand with regard to mineral ratios. Excess Mg will not support best health or potency for MJ.

The use of Ca/Mg as a "needed" thing???
RO water use in hydro applications, and the use of Coco (as in straight coco/perlite, or high coco % contents in some soil mix's - I would say the mix would be bad and be difficult to "control"...

Other then that....If you get bagged soils or build your own. You don't "need" Ca. or Mg. (single exception may be FFOF.....1/2 cup of Dolo covers the light Ca/Mg content of OF)

 

[sixixix]

I've seen plants that look pretty much exactly like this, and the cause was prolonged overwatering. Symptoms were yellowing leaves (probably from lockouts/ph problems), very little growth from the branches on the main stems, and a leafy palmy look, just like yours.

I'm not claiming that this is what's going on with your plant, but watering every 2-3 days in a 20l pot could be too much, depending on how much you give them. Also, how is the temperature at the bottom of the pot? Low temps in the root zone make matters worse if you're dealing with overwatering.

 

[Dr. Who]

I've seen plants that look pretty much exactly like this, and the cause was prolonged overwatering. Symptoms were yellowing leaves (probably from lockouts/ph problems), very little growth from the branches on the main stems, and a leafy palmy look, just like yours.

I'm not claiming that this is what's going on with your plant, but watering every 2-3 days in a 20l pot could be too much, depending on how much you give them. Also, how is the temperature at the bottom of the pot? Low temps in the root zone make matters worse if you're dealing with overwatering.

It's not "how often" you water!
The problem is always "how much" you water!

I water everyday - a metered amount to get you to the next day, at lights on. I get more O2 to the roots and better ability to control nutrient ratio's.

 

[Zefito]

Thank you everybody for all the helpful info.
The reason i started to use coco coir was to drop and keep a slightly more acidic medium.

I'm careful with watering, also determining the weight of the pot.About 2lt per watering with less than 5% run off.

Temps are on the higher side 30c, the reason i got Kaya Gold strain is for they can withhold high temps.

Here in Greece and can only get Biobizz and bio Canna,i will try the latter next.

I starting to think the corporate is the vinegar i use for non fertilize watering...that should of mess with the PH..i ordering a PH down.

Does anyone her think i should save the plant of shall i just start over?

Thank you all

 

[Zefito]

Thank you everybody for all the helpful info.
The reason i started to use coco coir was to drop and keep a slightly more acidic medium.

I'm careful with watering, also determining the weight of the pot.About 2lt per watering with less than 5% run off.

Temps are on the higher side 30c, the reason i got Kaya Gold strain is for they can withhold high temps.

Here in Greece and can only get Biobizz and bio Canna,i will try the latter next.

I starting to think the corporate is the vinegar i use for non fertilize watering...that should of mess with the PH..i ordering a PH down.

Does anyone her think i should save the plant of shall i just start over?

Thank you all

 

[Zefito]

Thank you everybody for all the helpful info.
The reason i started to use coco coir was to drop and keep a slightly more acidic medium.

I'm careful with watering, also determining the weight of the pot.About 2lt per watering with less than 5% run off.

Temps are on the higher side 30c, the reason i got Kaya Gold strain is for they can withhold high temps.

Here in Greece and can only get Biobizz and bio Canna,i will try the latter next.

I starting to think the corporate is the vinegar i use for non fertilize watering...that should of mess with the PH..i ordering a PH down.

Does anyone her think i should save the plant of shall i just start over?

Thank you all

 

[Zefito]

Thank you everybody for all the helpful info.
The reason i started to use coco coir was to drop and keep a slightly more acidic medium.

I'm careful with watering, also determining the weight of the pot.About 2lt per watering with less than 5% run off.

Temps are on the higher side 30c, the reason i got Kaya Gold strain is for they can withhold high temps.

Here in Greece and can only get Biobizz and bio Canna,i will try the latter next.

I starting to think the corporate is the vinegar i use for non fertilize watering...that should of mess with the PH..i ordering a PH down.

Does anyone her think i should save the plant of shall i just start over?

Thank you all

 

[BRANDON77]

you need nitrogen....start there, do a foliar feed of some maxigro or something similar......looks overwatered, ide slow down on that....see where u end up. Make sure you scope them too...unhealthy plants will show up with pests sooner rather than later.

 

[Cx2H]

Coco needs water daily or every other max in veg and daily in bloom or sheet happens. Not soaking wet but just enough. Mg defs take 3-5 weeks to get out of control in Coco.

And now I should probably read the thread and see what's going on.

 

[Zefito]

oops sorry for the many posts

 

[Greenthumbskunk]

Hello fellow growers

I have read and studied the problems but with no avail. Have tried 5 different strains, autos and fems. The problems always start on week 4-5, were even after feeding leaves start going yellow and dry spots.

Small indoor grow tent

Lights 3 vero 29 150watts (50W each)

Soil 1/3 perlite, coco coir and bio bizz light mix

Temp 25-30c

RH 60-80%

Fertilizer Bio bizz line ½ strength (about 1-2ml of grow,heaven and acti vera)

PH 6 goes in 6.5-7 soil runoff

PPM 900-1000

5 week old

Strain Kaya Gold Nirvana (Specially suitable for high temps)

Thought it might be calmag, so I bought some.

All seems like PH problems but my PH meter is calibrated. I use vinegar to drop the tap water PH and not PH down product.

I have ran out of ideas.

Thank you

I think your soil ph is too high.

 

[Zefito]

I think your soil ph is too high.

i think you are right..buying some ph down now.

 

[CptBluemax]

mate dont use ph UP and DOWN in a soil/coco grow , its meant for hydro the acids in it will damage the soil ph even farther , soul should regulate its own ph for a single grow cycle no problem.

Didnt touch ph meter or up/down with my latest grow in all mix.

chuck that light mix out the window and stop with the mix mix for now and get the all mix , id also recommend biobizz grow,bloom and top max (wont regret top max when you see the trace nutrient list as long as your arm , cover every deficiency they could get apart from lack of NPK)

allmix seems to do them fine 4+ weeks but then they definitely need at least 1ml grow/litre feeding , even in all mix , theyll suck the nitrogen out of that light mix in a week or two.

If you can get rootriot cubes and a little propagator to start them off with you will be golden.