Orange/brown spots on leaves.

DrWahoos

Member
Hello all! I'm a somewhat experienced grower but all outdoor. I decided to try my hand at indoor(big SMH). I'm growing in 5 gallon soil smartpots. I have 5 plants, 3 different strains. I believe I have hit a nute problem as it seems I'm experiencing some lock out. Because they are 5 gallons, and flushing with Ph'd water seems a bit out of reach,(even 10gallons through each seems like a frickin task!) I'm wondering if I need to do something with the soil. Would it be easier for me to flush or use a product like "earth juice" to fix the soil instead of the water every time. Please help!!
 

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DrWahoos

Member
Looks like a possible calcium deficiency. What are you feeding them?
Earth Juice is not going to just "fix your soil"
Just using foxfarm grow big and big bloom. I've held off feeding them for about 2 weeks now. The roots obviously appear much happier. But I was thinking of the earth juice to help with my ph. My soil sits at around 7.8 or so.
 

waterproof808

Well-Known Member
Just using foxfarm grow big and big bloom. I've held off feeding them for about 2 weeks now. The roots obviously appear much happier. But I was thinking of the earth juice to help with my ph. My soil sits at around 7.8 or so.
Neither of the fox farm products you are currently using have any calcium in them. Give them some cal mag.
Are you using a TDS/EC meter?
 

SPLFreak808

Well-Known Member
Just using foxfarm grow big and big bloom. I've held off feeding them for about 2 weeks now. The roots obviously appear much happier. But I was thinking of the earth juice to help with my ph. My soil sits at around 7.8 or so.
If you have EJ oilycann or cal/mag then go for it.

Dolomitic limestone would help give you some long term calcium,mag and would help to further stabilize pH.

In something like ocean forrest i like to start with a minimum of 1 teaspoon of lime per gallon of soil.
 

DrWahoos

Member
Neither of the fox farm products you are currently using have any calcium in them. Give them some cal mag.
Are you using a TDS/EC meter?
Wow I can't believe I completely overlooked that. Oh waitbongsmilie maybe I can hahaha. No I do not, would a $15 one off amazon do the trick? I would post the link but i'm to "young".
Side Note, I'm using an amended soil called vitality blend organic potting soil, by vital garden supply which has dolomite lime already present. I did not amend it after that
.
 
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Lite

Well-Known Member
Yes the amazon TDS meter is just fine, i actually quite like it (the light blue one)

that doesn't really look like a calmag deficiency to me. that more looks like bugs, i would move that plant away from the others until this gets sorted just to be safe.
 

DrWahoos

Member
So, I have eradicated a bunch of spider mites. Totally free and clear after 3 treatments. I used baking soda, neem oil, avo and dawn liquid dish soap. sprayed every 2-3 days and all good. Powdery mildew is all dead just some left over residue that is getting washed off. I ended up getting some CalMag and did a watering of about 3ml per Gallon with super light doses of Grow Big and Big Bloom(foxfarm). It almost seems like it got worse within minutes on the two King louie plants. The Sour diesels are sucking up water and growing nice and fine but even with a super light nute watering they got burned/necrotic tips. There is still a little orange spotting on those but all in all seem happy. I'm quite confused. I'm going to just water with ph balanced water and light calmag for now. Im thinking of trying to use the CalMag in a foliar spray after lights off tonight? I want to get them situated before going into bloom but it is definitely holding me up. I know putting into bloom changes plant structures and all that stuff. Is it possible that the plants would respond well or just be pissed off? hahaha Thanks for all the help guys! The first picture is the happy Sour diesel. 2/4 pictures are the King Louie and the 3rd is the G.W. Kush IMG_6701.JPG
IMG_6698.JPG IMG_6700.JPG IMG_6699.JPG
 

DrWahoos

Member
I just watered about 1.5 liters of ph'd water with 2ml per gallon. Is it possible to see adverse effects within minutes? Is it also possible that when lowering the PH to neutral, and adding lower than the recommended dose that it could be locking it out? It almost seems as though I can see the orange spots turning necrotic and brown/dark green and worsening as the minutes go by. Is this possibly a fungal/disease problem?

I know I say a lot of is this possible and I know im going to get a lot of anything is possible. I want to add to all those..."within reason"
 
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DrWahoos

Member
So, just to help out....I finally got my hands on a ppm meter. I tested it at a ph of 7.5 and 490ppm!!!!! Soooo this leads me to believe that i was locking out cal and mag. and when I was adding extra to the soil it only exacerbated the problem. I have used my tap water before over the years. Maybe with all the rains we had this last year just filled the city water. I live in Orange County, so heads up to anyone in the area.
 

Blitz35

Well-Known Member
Those spots are one of two deficiencies..calcium or manganese. You've been adding cal-mag, you say the tap water is 490 ppm? Obviously dangerously high for anyone to ingest, but nonetheless, that too has calcium in it. If cal mag hasnt helped, then the issue was manganese not getting to the plant. Among some other elements, excess calcium will antagonize manganese. Cal-mag, plus tap water with a super high ppm (usually alot of it is calcium), has likely caused a lockout. Try reducing calcium and possibly even phosphorus as that too can lockout manganese..increase potassium slightly as it helps in the absorption of manganese. The plant doesnt need much of it, but if it's completely locked out..you will get spots just like that moving from newer to older growth.
 

DrWahoos

Member
Those spots are one of two deficiencies..calcium or manganese. You've been adding cal-mag, you say the tap water is 490 ppm? Obviously dangerously high for anyone to ingest, but nonetheless, that too has calcium in it. If cal mag hasnt helped, then the issue was manganese not getting to the plant. Among some other elements, excess calcium will antagonize manganese. Cal-mag, plus tap water with a super high ppm (usually alot of it is calcium), has likely caused a lockout. Try reducing calcium and possibly even phosphorus as that too can lockout manganese..increase potassium slightly as it helps in the absorption of manganese. The plant doesnt need much of it, but if it's completely locked out..you will get spots just like that moving from newer to older growth.
That is exactly what has happened. After much advice and a lot of forum reading I'm pretty sure I need a good flush with some RO water. Does that seem like it would make sense?
 

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Blitz35

Well-Known Member
It would as who knows what was in that 490ppm tap water..so it should be flushed out and re administer a 'proper' feed. From some of these pics, like 6731, that browning/burnt edges of the leaf is a potassium deficiency..either its not in the soil, or its locked out by either too much nitrogen, calcium, magnesium, phosphorus or sodium. Tap water, ideally should be less than 200ppm. If you live in a big enough city, you can check the online water report to see what exactly it consists of.
 

#woke

Active Member
So, I have eradicated a bunch of spider mites. Totally free and clear after 3 treatments. I used baking soda, neem oil, avo and dawn liquid dish soap. sprayed every 2-3 days and all good. Powdery mildew is all dead just some left over residue that is getting washed off. I ended up getting some CalMag and did a watering of about 3ml per Gallon with super light doses of Grow Big and Big Bloom(foxfarm). It almost seems like it got worse within minutes on the two King louie plants. The Sour diesels are sucking up water and growing nice and fine but even with a super light nute watering they got burned/necrotic tips. There is still a little orange spotting on those but all in all seem happy. I'm quite confused. I'm going to just water with ph balanced water and light calmag for now. Im thinking of trying to use the CalMag in a foliar spray after lights off tonight? I want to get them situated before going into bloom but it is definitely holding me up. I know putting into bloom changes plant structures and all that stuff. Is it possible that the plants would respond well or just be pissed off? hahaha Thanks for all the help guys! The first picture is the happy Sour diesel. 2/4 pictures are the King Louie and the 3rd is the G.W. Kush View attachment 4046303
View attachment 4046299 View attachment 4046300 View attachment 4046301
Remember if calmag is a nitrate can burn . Check out nectar or the gods line. Or growmore line. Monstergardens have vides so does oregon constant gardner all on youtube
 
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