Brown / Rust spots all over lower fan leaves

@Charlie

@Charlie

Member
Hey all, something is wrong with my plants lower fan leaves. Rust/brown spots are all over the lower fan leaves. Here's my info and pics

System: bubble buckets w/ airstone
Nutrients: floranova grow @ 1200ppm
ph: ~5.75. checked everyday
Lighting: 400w mh 16 inches away
Temp: ~85F
Humidity: ~50%
Ventilation: intake connected to a/c vent, passive when not on. 500cfm booster fan exhaust





 
doc111

doc111

Well-Known Member
@Charlie said:
Hey all, something is wrong with my plants lower fan leaves. Rust/brown spots are all over the lower fan leaves. Here's my info and pics

System: bubble buckets w/ airstone
Nutrients: floranova grow @ 1200ppm
ph: ~5.75. checked everyday
Lighting: 400w mh 16 inches away
Temp: ~85F
Humidity: ~50%
Ventilation: intake connected to a/c vent, passive when not on. 500cfm booster fan exhaust





Click to expand...
Could be magnesium deficiency. Are you using r/o water?
 
Genosyde

Genosyde

Well-Known Member
my plant looks just like this but not as severe very few brown spots, but i DO mist my plant often, does that have something to do with it as well? my plant looks like that last pic that @charlie posted in certain areas, should i run a ph test?
 
hoots123

hoots123

Well-Known Member
i get this in all my grows too i still havent figured out what it is.. but i really think it could be MAG DEF. i even bought mag pills for humans and broke off little bit it seemed to help. mine go from rust to green and sometimes really bad rust if i dont co anything.

right now mine are turning yellow/brown like oily looking. and the really green onse are turning from dark green to a yellow green. any ideas?
 
T

The Lorax

Active Member
SIPDER MITES. for sure, they eat the leaves and leave brown spots if u dont treat it with floramite or something of the sort, a fogger, or neem oil the browns spots will get worse as they eat and dry and eventually fall off. best to take care of spider mites sooner rather than later. look under the leaves with the brown spots and look for little black dots, mites. if you have one, look thru a 30X magnifying glass
 
hoots123

hoots123

Well-Known Member
here is a couple that have rusted bad.. and i really have no nutes in these onse.. some are seedling femenized seeds and the others are clones.. but ya this is when the rusting's gone wild.

wow they look bad haha! damnit.. i neglect them a bit too much sometimes.
 

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LUDACRIS

LUDACRIS

New Member
joshkrauss said:
pretty sure spider mites leave white spots. ive had mite before and they left white spots and cob webs, i have a similar problem to the pics above now and its not a mite infestation
Click to expand...
100% mites i have dealt with them and know straight away that thats mites.
no doubt whatsoever.
but this thread is very old.

LUDA.
 
consume

consume

Active Member
LUDACRIS said:
100% mites i have dealt with them and know straight away that thats mites.
no doubt whatsoever.
but this thread is very old.

LUDA.
Click to expand...

Here's a look at one of my plants. No bugs, but rust color on lower leaves.

I had been using rhizotonic as a foliage spray once a day.

Aero system, with Canna aqua veg at 600 ppm. 1 week in veg.

Any idea what is going on?

First two pics, top of lower leaf with problems. Third pic is of top growth. Fourth pic is the bottom side of first two pictures.
 

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Roland

Roland

Active Member
consume said:
Here's a look at one of my plants. No bugs, but rust color on lower leaves.

I had been using rhizotonic as a foliage spray once a day.

Aero system, with Canna aqua veg at 600 ppm. 1 week in veg.

Any idea what is going on?

First two pics, top of lower leaf with problems. Third pic is of top growth. Fourth pic is the bottom side of first two pictures.
Click to expand...
I found this info ... it pertains to Rust fungus ... I don't know if this is what you have ..


http://www.gardensalive.com/article.asp?ai=682&eid=082706ga&sid=143894&gclid=CMC_uoeUgJ4CFQgtawodDQUUqQ&bhcd2=1257846759
 
LUDACRIS

LUDACRIS

New Member
consume said:
Here's a look at one of my plants. No bugs, but rust color on lower leaves.

I had been using rhizotonic as a foliage spray once a day.

Aero system, with Canna aqua veg at 600 ppm. 1 week in veg.

Any idea what is going on?

First two pics, top of lower leaf with problems. Third pic is of top growth. Fourth pic is the bottom side of first two pictures.
Click to expand...


P.H fluctuation.

LUDA.
 
demonic1

demonic1

Well-Known Member
Its magnesium deficiency. Starts on the older fan leaves and moves up the plant. The fan leaves canoe shape and the veins stay dark green while the leaves develop necrosis between the veins. (Which are the brown spots you see?) Give it 1 tsp Epson salt per gallon for the next two watering. The spots wont heel but the leaves will start looking healthier and your plant will start greening back up. You can also add garden lime to your soil before planting next time but feeding them some Epson salt now will help it a lot.
 
LUDACRIS

LUDACRIS

New Member
demonic1 said:
Its magnesium deficiency. Starts on the older fan leaves and moves up the plant. The fan leaves canoe shape and the veins stay dark green while the leaves develop necrosis between the veins. (Which are the brown spots you see?) Give it 1 tsp Epson salt per gallon for the next two watering. The spots wont heel but the leaves will start looking healthier and your plant will start greening back up. You can also add garden lime to your soil before planting next time but feeding them some Epson salt now will help it a lot.
Click to expand...

bullshit.

LUDA.
:lol:
 
SMOKEnCHOKE

SMOKEnCHOKE

Active Member
I get same problem early in vegging and it's def not bugs...I find if I adjust the ph a little too much it gets worse so I assume that's the cause
 
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