Yellowing of the veins?

I've not been able to dig up much info on this symptom. Here is what it looks like:


She is about 5 weeks into flower and has been yellowing like this for about two weeks. She is losing a lot of fan leaves. I've had intermittent issues with spider mites and have been beating them back with Neem oil, and I've got a batch of ladybugs on the way, just ordered them yesterday.

I know yellowing of the margins is usually magnesium or potassium, but I've never heard of yellowing of the veins. Anyone have a clue or seen this before?

nfhiggs said:

I've not been able to dig up much info on this symptom. Here is what it looks like:
View attachment 3965557

She is about 5 weeks into flower and has been yellowing like this for about two weeks. She is losing a lot of fan leaves. I've had intermittent issues with spider mites and have been beating them back with Neem oil, and I've got a batch of ladybugs on the way, just ordered them yesterday.

I know yellowing of the margins is usually magnesium or potassium, but I've never heard of yellowing of the veins. Anyone have a clue or seen this before?

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Never focused on the veins that closely to give u a solid answer but u have mag deficiency not potassium. Id hit tyem with some calmag. What are you feeding them?

ya it looks like it could be a magnesium and or calcium issue

but with the mites its hard to say cuz those suckers can fuck shit up
those fucker will stand up and laugh at the neem oil

if your a person whom doesn't have any auto immune issues and your smoking to get high not for medical problems

and your not concerned with pesticides that are considered harsh

floramite works great, but I wouldn't use it in bloom
kills them dead and gives on going cover for a bit
id spray them 2x 10 days apart and your done

if you want to go more natural theres other options but there not as guaranteed

you can get predetors, but im not sure lady bugs are for mites are they? not sure?

jensenbeach1 said:

Never focused on the veins that closely to give u a solid answer but u have mag deficiency not potassium. Id hit tyem with some calmag. What are you feeding them?

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They get 1 tsp/gallon of GH MaxiBloom, and 3 ml/gallon of CalMag. I'll try upping the CalMag to 5 ml/g and see if it improves.

im4satori said:

ya it looks like it could be a magnesium and or calcium issue

but with the mites its hard to say cuz those suckers can fuck shit up
those fucker will stand up and laugh at the neem oil

if your a person whom doesn't have any auto immune issues and your smoking to get high not for medical problems

and your not concerned with pesticides that are considered harsh

floramite works great, but I wouldn't use it in bloom
kills them dead and gives on going cover for a bit
id spray them 2x 10 days apart and your done

if you want to go more natural theres other options but there not as guaranteed

you can get predetors, but im not sure lady bugs are for mites are they? not sure?

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Growing mostly for edibles for my wife, who uses medicinally. I'd like to avoid strong pesticides if I can.

As for ladybugs and spider mites:

While they may prefer aphids, they seem to be happy to eat them...

do you happen to have the maxi grow also?

I would need to know how much a tsp weighs
that's a good product
but an appropriate dose would be
full strength
4grams per gallon maxibloom
2.5 mls calmag

if you happen to have the maxigrow or if you can get it

id think youd be a lot happier in bloom mixing
per gallon
2grams maxigrow
2grams maxibloom
2.5mls calmag

this is a much better formula for bloom
im not saying maxibloom alone wont work but this is far better

maxibloom alone is ridiculously high in P and very low in N

im4satori said:

do you happen to have the maxi grow also?

I would need to know how much a tsp weighs
that's a good product
but an appropriate dose would be
full strength
4grams per gallon maxibloom
2.5 mls calmag

if you happen to have the maxigrow or if you can get it

id think youd be a lot happier in bloom mixing
per gallon
2grams maxigrow
2grams maxibloom
2.5mls calmag

this is a much better formula for bloom
im not saying maxibloom alone wont work but this is far better

maxibloom alone is ridiculously high in P and very low in N

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I've got both maxibloom and maxigrow. This last run I've been going by the Lucas Formula, which for GH Maxi is just the bloom at 7g per gallon for veg. The Hydro plant is loving it, no problems at all with her. It just this soil plant that's being a PITA. With the previous 3 soil plants (that I finished in May) I was going by PPMs and was doing 5 mls of CalMag, and then enough maxibloom to give me 900-1000 PPMs. At that mix I noticed they would start to Ntox about every 2.5 weeks. The current mix of 3 ml Callmag and 1 tsp Bloom (about 650 PPMs) seems to be working well for the hydro plant (Dutch bucket) but this soil girl.... not so much it seems.

For some reason I thought 7g was one teaspoon of Maxibloom, but its not. I just weighed some and 7g is close to a tablespoon. So it would seem I've been a little light on the concentration according to the Lucas formula.

I'll go ahead and try your suggestion with the soil plant and see if it improves.

7 grams is waaaay tooo muuuch
all that K gave you calcium and magnesium lock out and you might still be showing issues from it

I understand the lucas formula and that the maxibloom alone is close to lucas (but even more P than lucas)


youll be much happier if you mix it 50/50 at 2 grams each plus the calmag
(calmag in some cases not required depending on source water)

for both grow styles

I promise

btw; maxibloom alone is close to lucas formula no matter how many grams you use its still lucas

add 4gram or 7 grams or 20 grams its all lucas ratios that make npk 1:1:2

its just a matter of how hot you want the mix or how high the ppm/EC is

Just basing this on what I see in the pic up top, I think you have overfed/have salt/nutrient buildup in the soil which eventually has caused an antagonistic reaction between elements fooling the observer into thinking it is a deficiency from needing some certain nutrient element in a higher dose. I may be wrong. just what I see.

if you mix it 50/50 the mix will be the Hoagland formula npk 2:1:3

(its either Hoagland or steiner I cant remember)

Johnei said:

Just basing this on what I see in the pic up top, I think you have overfed/have salt/nutrient buildup in the soil which eventually has caused an antagonistic reaction between elements fooling the observer into thinking it is a deficiency from needing some certain nutrient element in a higher dose. I may be wrong. just what I see.

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id have to agree

I think you've got or you had a lock out issue from excess K in you mix

7grams is 121 P and 215 K

that's a fuck ton of both (double what it should be)

im4satori said:

7 grams is waaaay tooo muuuch
all that K gave you calcium and magnesium lock out and you might still be showing issues from it

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But I've NOT been giving 7g, I've been giving one tsp, which is about 3g. - basically the lower end of the recommended strength as stated on the bag

im4satori said:

I understand the lucas formula and that the maxibloom alone is close to lucas (but even more P than lucas)


youll be much happier if you mix it 50/50 at 2 grams each plus the calmag
(calmag in some cases not required depending on source water)

for both grow styles

I promise

btw; maxibloom alone is close to lucas formula no matter how many grams you use its still lucas

add 4gram or 7 grams or 20 grams its all lucas ratios that make npk 1:1:2

its just a matter of how hot you want the mix or how high the ppm/EC is

Click to expand...

I will try the half and half - it should yield close to the same PPMs I've been using, maybe a little more.

Johnei said:

Just basing this on what I see in the pic up top, I think you have overfed/have salt/nutrient buildup in the soil which eventually has caused an antagonistic reaction between elements fooling the observer into thinking it is a deficiency from needing some certain nutrient element in a higher dose. I may be wrong. just what I see.

Click to expand...

Pretty sure its not buildup of salts. She has been flushed a few times with a couple of gallons of water, most recently last week. PH of runoff has been within a few tenths of the input every time I've checked it.

nfhiggs said:

I've got both maxibloom and maxigrow. This last run I've been going by the Lucas Formula, which for GH Maxi is just the bloom at 7g per gallon for veg.

For some reason I thought 7g was one teaspoon of Maxibloom, but its not. I just weighed some and 7g is close to a tablespoon. So it would seem I've been a little light on the concentration according to the Lucas formula.
.

Click to expand...

ok I guess this confused me

3 grams by itself is a little low then

just use the formula the way I mentioned 50/50 2 grams each and the calmag
which will balance the mix and the cation
this way you know the nutes aren't your problem moving foward

nfhiggs said:

Pretty sure its not buildup of salts. She has been flushed a few times with a couple of gallons of water, most recently last week. PH of runoff has been within a few tenths of the input every time I've checked it.

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So she should be getting better then, things take time.

?