Sulfur deficiency??? need some advice PICS!!

5th day into 12/12 runing 400w metal halide
growing in poting soil mix with worm casting, coco tek and perlite
during veg i fed with mexican guano also using fox farms trio,
just fed with tiger bloom and epsom salt
temps in new growroom have been reachin 84, humidity stays good above 60, soon draging an ac vent to the room

heller rollitup I can't explain howmuch this forum has helped me with what I've been doing, don't bother to post much since most of the info needed is already posted just gotto seach right? Please take a look at my problem and give me some advice, from what ive been reding this could be a sulfur deficiency, as you can see the yellowing starts at new growth, what ways can i go on to fix this?

Might be a nutrient lockout because you have N def aswell

humidity stays good above 60........




humidity in flower should be kept below 50%RH, or mold may occur.

they look like they have a case of the "fed to death." N toxicity with lock-out of who knows what else. flush big. good luck.

scroglodyte said:

they look like they have a case of the "fed to death." N toxicity with lock-out of who knows what else. flush big. good luck.

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thanks for the quickie(thats what she said) I think you might be right, big rookie mistake I just realized i fed on manday with a mix of mexican guano and big bloom, and then again couplle days thursday with tiger bloom and epsom salt cuase i thought it was a k deficiency then again the next day went to transplant and used some of the miraacle grow transplant on the water, i think i may have given those plants a death sentence but the yellow in the new growth started before this week, ill look up about how to flush

Have you been checking the pH of your nutrient solution and fresh water? It is most likely caused by nutrient lockout keep your pH of your nutrient solution and fresh water at 6.5 to prevent lockout... It is also a good idea when using the Fox Farm Trio to add Botanicare's Cal Mag plus to provide the right amount of calcium for proper growth

WhiteRooster said:

Have you been checking the pH of your nutrient solution and fresh water? It is most likely caused by nutrient lockout keep your pH of your nutrient solution and fresh water at 6.5 to prevent lockout... It is also a good idea when using the Fox Farm Trio to add Botanicare's Cal Mag plus to provide the right amount of calcium for proper growth

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yea but I use the not so accurate ph test solution, I have 4 plants going in soil all being fed the same but only 2 shown yellowing, how do you go about mixing the calmag plus? can you mix it with the nutes or do you have to do it with plain water?

Flushing a 5 gallon pot with 10-15 gallons of water..bathtubs are good for this.