Toxic Salt Any Ideas Why?

My poor plants are showing signs of toxic salt buildup!!

Why I think this: Big ridges along vein lines with leaf fringes turned up. . . Sound about the right diagnosis? I hope cuz I flushed with FloraKleen per bottles instructions then refreshed the resi with fresh nutes put my babies back in the hydrotray waited a bit about an hr or 2 then ran a 5 min flood and then drained. . .checked them a while later and they look the same if not a little worse?!?!? WTF

Now I don't like to sleep with my babies upset so any ideas?

Ill post some pics below to help out. . .

Some Quick Info about the setup:
floranova nutes w/floralicious supplements along with diamond nectar at about 80% strength.

Started from clones 2 weeks under floros now growing under HIDs for about a month and a week or so

Lights are a twin bulb setup 250X2 1MH 1HPS about 12" from plant tops

Grow Space is 3ftx4ft

Temps are 73-75 w/top of garden at 80-82

Thats about all I can think of I also have a fan in there so move the air around to make those stems nice and strong

All the help and time donated to the thread is much appreciated

Happy Tokin'

Here are those pics. . .

















My Camera is such a POS ha ha can you tell the difference from the MH to HPS pics. . .

You have a magnesium deficiency. To remedy this problem, add 1tbsp of epsom salt per gallon of water. Also, make a weaker solution by mixing 2tsp of epsom salt into 1 gallon of water, and use that to mist the leaves. You should see improvement within 24 hours.

Planting Cannabis Seeds


some leave examples ... may help self diagnosis

seems like magnesium or zinc deficiency tbh

rolla8 said:

You have a magnesium deficiency. To remedy this problem, add 1tbsp of epsom salt per gallon of water. Also, make a weaker solution by mixing 2tsp of epsom salt into 1 gallon of water, and use that to mist the leaves. You should see improvement within 24 hours.

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Ur telling me to add 10 tablespoons of salt (I have a 10 gal resi) less than 24 hr after leaching for salt build up? And why do you say mag? Have you had the same problem? Reason I ask is my nutes have it in them already.
Maybe pH lockout then? My meter has been fucked a new one is on oder I have to calibrate the bitch I have like every day just to check my pH and still dont trust it to be honest. . . any ideas if that could be it cuz floranova is a complete fert. . . thanks for the ideas

12SQFT said:

Ur telling me to add 10 tablespoons of salt (I have a 10 gal resi) less than 24 hr after leaching for salt build up? And why do you say mag? Have you had the same problem? Reason I ask is my nutes have it in them already.
Maybe pH lockout then? My meter has been fucked a new one is on oder I have to calibrate the bitch I have like every day just to check my pH and still dont trust it to be honest. . . any ideas if that could be it cuz floranova is a complete fert. . . thanks for the ideas

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It's a simple problem and a simple diagnosis. Your plant is exhibiting textbook signs of a magnesium deficiency (the light green leaves with dark veins). Just because you leached your plants to correct a salt build-up doesn't mean that you had an excessive salt problem. What made you think you had a toxic salt build-up in the first place? If the pictures are an accurate view of the problem, then your original diagnosis was incorrect. Your problem may stem from a pH imbalance, but I doubt it. Usually if your pH is off, plants begin showing signs of a nitrogen deficiency because nitrogen is a macro nutrient present in higher quantities than any other nutrient, and so is the most prominent nutrient that gets locked out in the event of a pH imbalance. Trust me... your plant has a magnesium deficiency, and the way to correct it is by flushing it with an epsom salt solution.

rolla8 said:

It's a simple problem and a simple diagnosis. Your plant is exhibiting textbook signs of a magnesium deficiency (the light green leaves with dark veins). Just because you leached your plants to correct a salt build-up doesn't mean that you had an excessive salt problem. What made you think you had a toxic salt build-up in the first place? If the pictures are an accurate view of the problem, then your original diagnosis was incorrect. Your problem may stem from a pH imbalance, but I doubt it. Usually if your pH is off, plants begin showing signs of a nitrogen deficiency because nitrogen is a macro nutrient present in higher quantities than any other nutrient, and so is the most prominent nutrient that gets locked out in the event of a pH imbalance. Trust me... your plant has a magnesium deficiency, and the way to correct it is by flushing it with an epsom salt solution.

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Love the confidence. . .The reason I said toxic salt is because the leaf fringes are standing upward and there are defined ridges along vein lines. . .the reason I think ur assuming its mag def is the shitty camera the dark veins are caused by the shadows cuz of the ridges and the angle of the photo they arents any darker than the rest of the plant they also look light because of the flash thats fucked up and goes of no matter what they are all the same color like the leaf in the background. . .problems with my plant or as stated now and earlier ridges along vien lines and turned up leaf fringes color is even. . .no dark veins maybe a little purple but thatz the strain I've grown it a few times. . . tell me what you think???

epsom salt = magnesium sulfate

tusseltussel said:

epsom salt = magnesium sulfate

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and?

do you think its a mag def too tussel?

12SQFT said:

and?

do you think its a mag def too tussel?

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i couldnt say for sure but leaning

looks like a mag def to me.

and if your come here looking for help and get defensive because someone DID WHAT YOU ASKED and gave their opinion, you shouldn't bother asking in the first place

12sqft said:

All the help and time donated to the thread is much appreciated

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pastafarian81 said:

looks like a mag def to me.

and if your come here looking for help and get defensive because someone DID WHAT YOU ASKED and gave their opinion, you shouldn't bother asking in the first place

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What are you talking about maybe you should read the whole thread I was simply explaining the inconsistencies from what my pictures display bc of my shitty camera and what my eyes are seeing do me a favor and go bug somewhere else. . .

Mag def is dark veins my veins arent dark and my leaves arent light another sign that was the flash and the top of the plant the lightest part bc of new developement but I'm sure you knew all that. . .Look for intervein ridges and fringes standing on edge and see what you find toxic salt or heat stress and occasionally underwatering not mag def

I believe you're correct -run water only for a 6 hour period of normal watering cycles. then change out the water and replace with another ph balanced supply of nut/water and you should be good to go. The big question in my mind is why did this happen... You have to run a rinse cycle each time before changing the nut/water.

Got another pic to clarify a bit more I guess. . .again it looks a little lighter bc of the flash it doesnt turn off even with the lights please dont misunderstand me I enjoy all comments suggestions and all of the above and am in no way being defensive just cautious just as anyone else would be. . .

ThomJefferson said:

I believe you're correct -run water only for a 6 hour period of normal watering cycles. then change out the water and replace with another ph balanced supply of nut/water and you should be good to go. The big question in my mind is why did this happen... You have to run a rinse cycle each time before changing the nut/water.

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Who is correct the mag def diagnosis or toxic salt?

And I flushed with floraKleen and it seems almost the same check the pic I just posted thanks for the reply. . .

ok. I'm going by what you say about sodium buildup. I think you're right. So, do you rinse your system? You must not. Gotta do that every 7-10 days. Rinse. Change in new nut/water solution and run again for another 7-10 days. Also, gotta use ph balanced water.

Thats rookie stuff, I change my resi every 5 days with RO and fresh nutes pH balanced to 5.9 let it go up to 6.2 then adj back down to 5.9 and I said I flushed with floraKleen since I noticed signs its been a day or so. . .

I've run ebb/flo since '89 and never had a salt buildup anytime. Good luck.

well thats experience I need maybe not salt buildup then? did you ever get any symptoms similar to this? and what nutes you using? Rockwool or what how about some pics of what you got goin?

12SQFT said:

Who is correct the mag def diagnosis or toxic salt?

And I flushed with floraKleen and it seems almost the same check the pic I just posted thanks for the reply. . .

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12SQFT said:

well thats experience I need maybe not salt buildup then? did you ever get any symptoms similar to this? and what nutes you using? Rockwool or what how about some pics of what you got goin?

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My first grow was hydro (soil now) and I used FloraNova. One thing I did notice with the Flora series was the salt build up, newie and unable to make connections about plant issues. I always saw the salts at the base of the trunk and on the clay pebbles. Also there was the problem of red stems, spots, papery leaves, weak leaf stems, slow growth, and turned up edges. After that I switched to soil and still the same thing all the salts built up at the trunk and in the soil. Recently (within the last month) I read somewhere that the Flora series does tend to have alot of salt build up, but before reading that I always treated my plants for a cal-mag definciency, which always worked, but not good enough because there was always a small sign of an issue.....irritating actually.

6 grows later and it was only during this one that the Flora Nova came to mind (the article I read) and that this could be the culprit for the consistancy of the illusive issue. Finally the bottle is empty and in the end I figure it is the salts build up that causes the cal-mag definciency.

True there is a definciency in calcium and magnesium but only because of the build up of salts. You and Rolla are both right on with the plant issue. Not totally sure how the get rid of the salts build up but do know that you can blast them with Cal-Mag by Botanicare and the salts remain and the cal-mag issue is only reduced. The fix for me is to go to a new feeding series, thinking Advanced Nutrients: Iguana Juice. Advanced also has excellent hydro food for the girls. I truely hope this lends some insight to what may be going on.