Some quickly emerging deficiency. Hook up some help?

So two days ago I flipped to 12/12 after 8-9 weeks of vegging my girls. The oldest one began to show some yellowing of the leaves (while veins remain green), so I was told that's Mg deficiency. I gave her a feeding yesterday of 1 tablespoon epsom salts, half a teaspoon BMO grow it green (organic), half a teaspoon of BMO flower power (also organic) to one gallon of water.

When I checked on her today, the condition had begun to get worse. All the pictured leaves are near the bottom of the canopy.









Has the magnesium not yet revitalized the plant's need for the micro-nutrient? Is it not a Mg deficiency? What's up with this, folks? Thanks.

Note the necrotic brown spots, as well as the slight leaf bowing on the one branch. Two days ago there was slight bronzing on a couple spots. Which I read could be Chlorine toxicity, then I've also read that plants eat up chlorine. So RIU community, I'm confused. Utterly confused. What should I do here...?

Forgot some things too:

Temperatures: 78-84 degrees F
Humidity: 40-60%
Bagseed in FFOF
Being fed Blue Mountain Organics nutrient line
Feed Water feed water schedule
4' - 6 bulb HO T5
Last feeding prior to the Epsom salt one was 300PPM (I've been taking it easy on her as to not burn whatsoever). The epsom salts (1 tbsp to 1 gallon) raised the ppms from 170 to 1000+

Looks like she needs N & P. Make sure the roots are ok.

If thats the case, wouldnt the feedings of veg and bloom nutes I fed her yesterday have cleared it up? Rather it looks unaffected by the feeding. Thanks for the reply.

let me kno what ur conclusion is because my plants look a bit like yours....let me kno what u think 8 plants 600 watts!! good luck

Look same as mine i just posted a thread earlier. Didnt get much response but i figured N def so my next batch which is 4 weeks behind i fed grow nute 2 week into flower and they are green all over with no issue other than slight claw, maybe overdid the N a bit. Also check ur ph and ppm runoff. And when in doubt flush it out with mild nute solution, like 3 times normal amount. Also thats alot of epsom, I read a little goes along way, like 1 tsp or 5ml per gallon. Too much and you'll lock out other nutes.

D'oh! I was definitely supposed to use one teaspoon, not one tablespoon. Now I can't remember if I actually did add a tablespoon or teaspoon of epsom salts. I'm thinking about flushing the soil tomorrow with 2 gallons of ph'd water and seeing if I can start anew.

I'm an idiot.

Damn Auzzie.....hope you get that sorted out. I have been battling a couple diff deficencies for weeks, just flipped my girls yesterday hope nothing freaky starts happening, lol

Its always something, ya know? Hope to have this girl sorted out soon.

Auzzie07 said:

If thats the case, wouldnt the feedings of veg and bloom nutes I fed her yesterday have cleared it up?

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Only if you gave her enough, the Ph of the fertilizer solution and/or soil wasn't off, and the roots aren't binding.

Auzzie07 said:

Rather it looks unaffected by the feeding

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Imo you should give her more fertilizer until she gets enough for there to be some effect. You may also want to have a look at the Ph of the soil and fertilizer mixes.

Auzzie,
So other than this wierdness with your girls the BMO nutrients have been good? I am intrigued.

I wish BMO had a micro nute as well, then I would be a lot happier. Next time I will probably go with AN, so I can give their "pH perfect formula" a try.

Magnesium (Mg) deficiency.
Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins. Notice how the veins remain somewhat green though
im pretty sure its a classic case.
It cantake up to 2 weeks to recover.

*BUDS said:

Magnesium (Mg) deficiency.
Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins. Notice how the veins remain somewhat green though
im pretty sure its a classic case.
It cantake up to 2 weeks to recover.

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Pending it even will recover seeing as my dumbass fed it a nutrient solution which included 3x the amount of epsom salts that I should have given it (damn tbsp vs. tsp), but hopefully it can still recover.

Auzzie07 said:

Pending it even will recover seeing as my dumbass fed it a nutrient solution which included 3x the amount of epsom salts that I should have given it (damn tbsp vs. tsp), but hopefully it can still recover.

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Sorry that happened to you bro but if it is any consolation........my plants got burned at a young age due to the same type of mistake, tbsp instead of tsp....but with ferts

To add additional micros couldn't you just amend your soil with azomite and epsom salts prior to planting. I will never use AN nutrients......I just think they play way to much hype, not saying they make a bad product......just SOOOOOOOO much hoooopla, lol. I want to try House and Gardens Soil 2 part next round

DJ GreenThumb said:

Sorry that happened to you bro but if it is any consolation........my plants got burned at a young age due to the same type of mistake, tbsp instead of tsp....but with ferts

To add additional micros couldn't you just amend your soil with azomite and epsom salts prior to planting. I will never use AN nutrients......I just think they play way to much hype, not saying they make a bad product......just SOOOOOOOO much hoooopla, lol. I want to try House and Gardens Soil 2 part next round

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Hopefully the high salinity levels don't fuck with the plant's wicking abilities. Yours are looking good, by the way.

You're right you could add micros via amendments in the soil. Or use a nute regime that has a micro nutrient in the regime; a mistake I won't make again (unless the product has the micro's built into the veg and bloom nutrient). The reason I say AN is due to their pH perfect technology and the overwhelming success growers on here have proven in it. I agree, it's hyped as fuck; not to mention, overpriced. But I've got to try it at least once.

I've heard many good things about H&G though. Can't wait to see the results with you using it. To everyone in this thread, you should sub up on DJ GreenThumb's journal. Gorgeous grow, everyone.

So how is your plant that got the epsom salts doing? I made my own soil mix when I transplanted, this was my first time going all organic, I made the mistake of not letting the soil "cook" for a couple weeks first so the amendments were not available to the plants right away because the microherd hadn't had a chance to develop and digest the organics for the plants and I didn't want to use mineral salt type ferts to fix the deficiencies because they kill the beneficial bacteria and fungi. I have been using the Earth Juice lineup, aerated with Bushmasters Micro brew (bunch of bacteria and mycorhise) and everything seems to be looking good now. Hopefully before next feeding my microherd will be good to go so I can go to just watering like I had planned.

I'm switching back to updating on the grow journal. Don't want to muck things up with forgetting to update info on my journal thread, and updating it here. So back to my journal, we go!

But, all-in-all, the yellowing is slowing down, calyxes are beginning to elongate and fatten/multiply. Pistils are still staying same length, but more are appearing every week. Smell is still a bit 'green' but not like cannabis, just fresh something-or-other.