Magnesium Deficiancy?

Cant pin point the problem

Temp: 75
Humidity: 25
2nd week of flowering (12-12)
400 watt MH bulb
filtered water when needed
used a gio grow(2-.01-6.6) and bio bloom(1.1-2.5-2) 2 weeks ago and had nute burn so flushed and the plants havnt been the same (they had deficiencies before i used the nutes)

I think it may be a magnesium (because of the rust spots) or sulfer deficiency. what do you think there is also some leave that have become spindly

Yup that looks like a mag deficiency to me dude
I would pick up a mag supplement like calmag+ by botanicare, CaMg+ by general hydroponics, or MagiCal by technaflora to name a few

could i use epsom salts because there arnt any stores that cary that stuff?

I guess you can but I would leave that to the foot baths, if you have a deficiency now than the nutes you are using don't have enough mag for the plants
I would use some epsom salt as a quick fix but def looking into a calcium/magnesium supplement

haa ok sounds good thanks for the help

asyouarei said:

haa ok sounds good thanks for the help

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2nd week flowering - normal nitrogen deficiency

By the time it's 1/2 done flowering it should look like this

so ur saying i have a nitro def and not a mag or do i have both ?

From the same site that GC posted from, here is a pic of what they call a mag deficiency



You should not have nitrogen deficiency this early into flowering

http://www.greenmanspage.com/guides/plant_abuse.html

There is a link. Notice how similar your leaves look to the pic I posted?
That is because you have a mag deficiency not nitrogen
This is what is said with the pic that greencross posted: As seen in figure 10 consumption of nitrogen (N) from the fan leaves during the final phase of flowing is 100% normal.
Would you consider where you are at the final phase of flowering? I sure hope not lol
You have a magnesium deficiency

that looks like the perfect mg deficiency ever

asyouarei said:

that looks like the perfect mg deficiency ever

Click to expand...

Yup that is what you have, listen to me I wouldn't point you in the wrong direction
I don't give out advice unless I am sure

will do ill let u know how it goes

Good luck dude

tom__420 said:

Good luck dude

Click to expand...

i have done three cycles of 2 teaspoons of epsom salts per gallon (halved between two plants)
and nothing seems to have changed except maybe worse, there is more of a darker discoloration on the leaf. the leaves from top to bottom are yellowing with brown tip edges and then dieing. interestingly enough the leaves in the third pick have been like that for a long time and arnt dieing

i dont know whats up

tom__420 said:

Yup that looks like a mag deficiency to me dude
I would pick up a mag supplement like calmag+ by botanicare, CaMg+ by general hydroponics, or MagiCal by technaflora to name a few

Click to expand...

Just my 2 cents.....I would say away from
using the Epsom salt.....

Did it look anything like these leaves when it started??