Brown burnt leaves

Hey gents, had a problem pop up about 2 weeks back that I can't seem to stop.
I have a hydro
grow, in a 5 gallon bucket.
I use advanced nutrients 3 part base, but only at 80% of the suggested dosage. Along with big bud, and bud candy at 80% dosage.
The plant is blackberry moon rocks photoperiod, that was my first attempt at manifolding.
Plant had been super healthy throughout its entire life until recently.
First it had burnt tips, so I diluted down to about 70% dosage, as it looked like nute burn, but it is still getting worse, so I believe I'm up against a deficiency but I don't know. Any opinions?
Ph is set at about 6 during water changes, and climbs to about 6.5 by the next water change.
I changed water when there is about 1 gal left in the bucket, and generally fill with 3 gals, but since irs been in flower I've been filling her to 4 gallons.

Spasticrat said:

but only at 80% of the suggested dosage.

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Do you use an EC meter to measure your dose?
I run less than 50% suggested feed with my nutes of choice from seed to harvest.

Creature1969 said:

Do you use an EC meter to measure your dose?
I run less than 50% suggested feed with my nutes of choice from seed to harvest.

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I do not unfortunately, I do have a tds meter is used to use. But have not in the past 3 grows.

This is only my 5th grow, and besides a bout with root rot on one of them, they all had happy yields, all on the same regime.....so I haven't been checking tds.

I just checked and I'm around 1800PPM!
I'm gunna drain some and top back off with pure water...holy fuck lol

That's not from a deficiency. That looks like nute burn. I drop the additives and just use the base nutrients at lower strength.

Potassium deficiency. Nute burn does not look like that.

I always start feeding with a bit less than half the recommended dose. I've found (at least with FoX Farms nutes) the recommended dose WILL cause burn

Phytoplankton said:

Potassium deficiency. Nute burn does not look like that.

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So you're saying it has absolutely nothing to do with the 1800 ppm. Did you bother to read what they're feeding? The Big Bud 0-1-3 they're adding is monopotassium phosphate and potassium sulfate. How do they have a lack of potassium?

xtsho said:

So you're saying it has absolutely nothing to do with the 1800 ppm. Did you bother to read what they're feeding? The Big Bud 0-1-3 they're adding is monopotassium phosphate and potassium sulfate. How do they have a lack of potassium?

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1800 PPM may be contributing. Do you see a resemblance?: Not using nutes at full strength.

It is nute burn - throwing 1800 ppm at it is insane.
Browning along serrated leaf edges are a dead giveaway.

OP already stated he does not check his dosage - assumes what he did before was gonna work.

Phytoplankton said:

1800 PPM may be contributing. Do you see a resemblance?: Not using nutes at full strength.
View attachment 5202705

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The picture you copied from the internet is meaningless. Same old cut and paste stuff used on dozens of so called pot growing websites. Overfeeding or incorrect feeding of too much of something is the main cause of all plant issues. The OP checked their EC and realized the nutrient solution was too strong and is fixing it.

The 3 part Bloom is 1-3-4 and the Grow is 2-0-4. The Big Bud is 0-1-3. There is more than enough potassium being given to the plants.

The insanity of multi-bottle feeds - it’s a god damn plant .

What other consumable plant need such crazy feeds and or multi-bottle bullshit.
But that’s AN for ya … push cartoon labels and money grabs.

You literally can dump the bottles / grab a bag of GH Maxibloom and run that grow from start to finish.

Budzbuddha said:

The insanity of multi-bottle feeds - it’s a god damn plant .

What other consumable plant need such crazy feeds and or multi-bottle bullshit.
But that’s AN for ya … push cartoon labels and money grabs.

You literally can dump the bottles / grab a bag of GH Maxibloom and run that grow from start to finish.

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If they can mix 0.25¢ worth of ingredients with water, put it in a bottle and sell it for $20 then more power to them. It is a for profit business. The marketing and packaging costs them more than what they are putting in those bottles. If they can get people to buy it then why not sell it? They just won't be selling it to me.

Is AN known for having problems?
im still a noob by all accounts
I'm not opposed to switching nute brand, any that yall would recommend?
The main reason I particularly like AN is because my the ph is almost spot on regardless of what water I start with.

And yea it's definently on me for not checking tds, but I don't know how it is so high.
I always fill and nute at the same rate.
4 gal of purified water, 40ml of each base, and 20ml each of the two additives.and it's always been fine.

And my past 4 plants did great minus like I said the one that got root rot, it lived but didn't make as much.

The blue dream auto I just harvest got me 6.7 oz. On the same regime

xtsho said:

The picture you copied from the internet is meaningless. Same old cut and paste stuff used on dozens of so called pot growing websites. Overfeeding or incorrect feeding of too much of something is the main cause of all plant issues. The OP checked their EC and realized the nutrient solution was too strong and is fixing it.

The 3 part Bloom is 1-3-4 and the Grow is 2-0-4. The Big Bud is 0-1-3. There is more than enough potassium being given to the plants.

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The question is why is the tds so high? If the base water is 600-700 PPM's, what is it? If it's Calcium that will inhibit the uptake of Potassium and give you a deficiency.

Phytoplankton said:

The question is why is the tds so high? If the base water is 600-700 PPM's, what is it? If it's Calcium that will inhibit the uptake of Potassium and give you a deficiency.

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Purified water

Phytoplankton said:

The question is why is the tds so high? If the base water is 600-700 PPM's, what is it? If it's Calcium that will inhibit the uptake of Potassium and give you a deficiency.

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You're really pushing that potassium deficiency hard. Just because you found some pictures online that look similar doesn't make it so.

Even if it was a case of too much calcium being antagonistic and preventing the uptake of potassium that would be a symptom of an excess of something not a lack of something. But since the OP is using purified water we can rule that out.