I could sure use some help

I noticed these rust colored spots the other day while i was watering my ladies. Not surw what could be causing these spots.....(a heads up) this plant had showed nute burn the first time i added nutes while thw other four took the feeding no problem
4 white widow autos
3 gallon felt pots
Fox Farm Ocean Forest Soil
Water every second or third day,feed nutes every third feeding
2-600 watt LEDs
In their first week of 12/12 lighting

If they autos you should keep them at 18/6 not12/12

blake9999 said:

If they autos you should keep them at 18/6 not12/12

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Thought they were autos,but after 5 weeks veg no flowers so i contacted the company and they said to switch to 12/12 and they should flower...shit if i have to change them they arent autos...lol...so at this point im lost..haha

Looks more like fungal attack than a deficiency. I've found that on heavily leafed plants that aren't getting enough airflow around them and once a few leaves were trimmed out to allow better flow or they were moved into a spot where the fan could hit it better it didn't progress.

OldMedUser said:

Looks more like fungal attack than a deficiency. I've found that on heavily leafed plants that aren't getting enough airflow around them and once a few leaves were trimmed out to allow better flow or they were moved into a spot where the fan could hit it better it didn't progress.

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Yeah might have to add a fan inside my tent...i have one small 6in fan inside the tent, a 4in booter fan for intake air and a 6in inline fan for the outtake...forgot ro add that u gave the girls some mammoth p the day i noticed the spots....any info on how i can stop this fungal attack?

It's not that big a deal as long as you can increase airflow around them. I'd be careful with feeding when using FF soil. I started mixing my ProMix HP with their enriched potting soils and was overdoing the feed the first couple of grows. Got toxic salts buildup that burned up the leaves bad in mid-late flowering and the grow I'm doing now is much better. Almost done 5 weeks flower with no signs of it yet and they got one last good feed yesterday.

Is it on your leaves in general or only some of the lower, crowded ones? If it's not all over the place I snip out the damaged sections so I can better tell if it's getting worse or the steps I took to fix it have done the trick.

To me it's looks exactly like a cal/mag deficiency. I had one a few yrs ago and had those same exact spots on my leafs.

Makes allot more sense now also.... I just re read you're post and see you are using FF ocean forest soil as you're medium.... at the time I had that cal/mag deficiency I was using that same exact medium aswell! The FF ocean forest tends to not have enough calcium & magnesium in it. I'm surprised you haven't seen any info stating this....

Me personally I would be getting a thing of episom salts at Walmart or wherever and mixing me up a batch with warm water to disolve, let cool and put that into a mister bottle and do you a good foiler feed. I'd also dose them with it. You'd should see a big difference in a few days.

Sassafras¥ said:

Me personally I would be getting a thing of episom salts at Walmart or wherever and mixing me up a batch with warm water to disolve, let cool and put that into a mister bottle and do you a good foiler feed. I'd also dose them with it. You'd should see a big difference in a few days.

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Wouldn't salt kill my plant?

Sassafras¥ said:

Makes allot more sense now also.... I just re read you're post and see you are using FF ocean forest soil as you're medium.... at the time I had that cal/mag deficiency I was using that same exact medium aswell! The FF ocean forest tends to not have enough calcium & magnesium in it. I'm surprised you haven't seen any info stating this....

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Might add some cal/mag this next feeding....this is honestly my first real grow,with thw lights and tent and nutes...ive done a few backyard grows and one closet grow that i harvested way to early..haha

There is no calcium in epsom salts, (MgSO4), and low calcium causes problems with the newest leaves as it's not a mobile nutrient like magnesium so the new growth starts screwing up first. With low magnesium the older fan leaves start yellowing and it looks a lot like low N.

Go easy with the CalMag Honeycomb as too much leads to problems as well. I use 1/4 dose every second feeding or so and have never run into Ca deficiency even when I never used it.

Some epsom salts in flowering adds extra sulfur which is good for trichome production and is in most bloom boosters. A tsp/gal is lots. I use Big Bud which is 0-15-35 with 10% sulfur, 20 amino acids, ascorbic acid, (vit. C) and citric acid.

All the food your plants eat are in the form of salts. Even in pure organic growing the bacteria and fungus convert organic matter into salts to feed your plants. That's why organic growers "cook" their soil mixes so the beasties in the soil have time to convert stuff into nutrients your plants can eat. Your plants don't care if those salts were made by living organisms in your soil or mined from the ground. Salts are salts to them.

OldMedUser said:

There is no calcium in epsom salts, (MgSO4), and low calcium causes problems with the newest leaves as it's not a mobile nutrient like magnesium so the new growth starts screwing up first. With low magnesium the older fan leaves start yellowing and it looks a lot like low N.

Go easy with the CalMag Honeycomb as too much leads to problems as well. I use 1/4 dose every second feeding or so and have never run into Ca deficiency even when I never used it.

Some epsom salts in flowering adds extra sulfur which is good for trichome production and is in most bloom boosters. A tsp/gal is lots. I use Big Bud which is 0-15-35 with 10% sulfur, 20 amino acids, ascorbic acid, (vit. C) and citric acid.

All the food your plants eat are in the form of salts. Even in pure organic growing the bacteria and fungus convert organic matter into salts to feed your plants. That's why organic growers "cook" their soil mixes so the beasties in the soil have time to convert stuff into nutrients your plants can eat. Your plants don't care if those salts were made by living organisms in your soil or mined from the ground. Salts are salts to them.

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Thanks for the info man, I've been going with 1/4 of recommended dosage since i was using a hot soil..olan to cut fox forest with promix next grow..i sure would hate to lose any of my plants due to something i could have fixed or prevented

I've never used FF. Don't think I can get it way up here in Bumf**k, Alberta anyway but they have started selling various ProMix blends here the last few years so last fall I stocked up last fall. The ProMix HP is great right out of the bale if you want to go soilless and their Vegetable & Herb mix with added organic nutes will veg pot plants real good on it's own but needs some extra perlite to work best. I also got 5 - 85L bags of their potting soil that also has the organic nutes added and am growing in a 50/50 mix of it and the HP. All of them come with added myco so I feed some molasses/honey to keep the beasties happy. Seems to work really well and I'm hoping it gives the pot a bit of that organic flavour the dirt farmers are always raving about.

I'm growing 6 plants in 100% recycled promix from the previous grow. All I did was dump it out onto a tarp to break it up to remove most of the roots then put it back into the same pots and transplanted right into it. No flushing or anything else. I should have maybe done one plant in fresh soil to be able to compare but didn't think of it at the time. 5 of the plants are Identical clones so it would have been a good experiment. Next time for sure.

HONEYCOMBHILLZ said:

Wouldn't salt kill my plant?

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No... that's what growers use for cal/mag issues... Epsom Salt isn't really isn't salt bro..Chemically, Epsom Salt is a hydrated magnesium sulfate.
1. Magnesium enables the process of photosynthesis, and it gives the leaves their green color.

2. Sulfur is necessary for the production of enzymes, amino acids, and vitamins.

Here's a link on more info on it and I strongly advise you read it bro.. it has 20 reasons as to why and what ES can and will do for you and you're plants. http://www.dietoflife.com/10-reasons-use-epsom-salt-garden/

Hell I just save all my egg shells when the old lady cooks eggs, or if I do. Crush those bad boys up and use them in my soil for the extra calcium and the ES is dirt cheap.