rusty looking spots!!!!!! help!!

morreallyrics

Active Member

• Feb 23, 2010

• #1

hey guys i have about 30 plants in a sealed enviroment they are about 4 to 5 weeks... im using a few 1000 w lights...humidity is 55-60% temps between 76f-82f my ph has been a little low about 6.4-6.5 max....im gunna bring it up to 7 because i noticed about 4 plants have these rusty spots on em. the plants are growing great they are not drooping, i only water when dry and i started these babies on thier first feeding a week and a half ago on less than half the reccomended amount of nutes directed. Ive done plenty of hw on growing but im sure i missed somthing...can someone gimmie some advice!!!!!!!!

thanks

 

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GREEN000

Active Member

• Feb 23, 2010

• #2

looks to be a combination of thingsyour useing nutes so if you only water when its dry then your PH will allways jump around mabey allittle nute burn from it drying out try keeping your soil alittle damp see if that helps you could be getting hotspots when the soil drys

 

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chitownsmoking

Guest

• Feb 23, 2010

• #3

GREEN000 said:

looks to be a combination of thingsyour useing nutes so if you only water when its dry then your PH will allways jump around mabey allittle nute burn from it drying out try keeping your soil alittle damp see if that helps you could be getting hotspots when the soil drys

Click to expand...

dont really look like nute burn. that starts at the tips and works its way down. if i was buddy i would check the growfaq

 

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Imaulle

Well-Known Member

• Feb 23, 2010

• #4

what is your medium? if soil what kind?

If I had to guess I'd say the medium has too much Calcium and that is causing a Magnesium deficiency.

 

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chitownsmoking

Guest

• Feb 23, 2010

• #5

^^^ was thinking the same that or nutelockout. either way check the growfaq you will find what your looking for

 

Leothwyn

Well-Known Member

• Feb 23, 2010

• #6

I was going to say that I had that same problem once, and a friend recommended using some Calmag - it totally took care of it, right away.
But, if the problem is too much calcium, then maybe Calmag wouldn't work (?)

 

GREEN000

Active Member

• Feb 23, 2010

• #7

sorry my eyes alittle blurry right now but ill check my bible when my boy gets back if you want it has everything in it

 

morreallyrics

Active Member

• Feb 23, 2010

• #8

thanks for your help everyone.

I currently am using cal mag (ive been using only a quarter of the strength as recomended which could be a prob to i will raise to half the strength) however my ph has been below 6.5...its actually been at like 6.3 or 6.4. lol stupid huh?

anyways got some ph up next time i will raise it to 7.0 and see if this helps any.

i also raised the 1000 w lamp a tad since theyve gotten taller as well hopefully this dosent get any worse! thanks again guys~

GREEN000 said:

sorry my eyes alittle blurry right now but ill check my bible when my boy gets back if you want it has everything in it

Click to expand...

 

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chitownsmoking

Guest

• Feb 23, 2010

• #9

https://www.rollitup.org/view.php?pg=faq&cmd=article&id=588