Plant Problem, Can Anyone Help?

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dtm

Active Member

• May 17, 2009

• #1

About half my plant have the problem pictured below, it started at the bottom and working its way up it been there for a week now.
I have 30 plants 3 weeks into veg growing in 10L pots with terra pro soil under 6x 600 watt lights, feeding them canna vega and hygrozyme, PH is 5.8 temps are 84f day and 78f night.

Cheers in advance

 

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cruzer101

Well-Known Member

• May 17, 2009

• #2

It looks like a pH issue to me.
Have you calibrated your pH meter recently?

 

heathaa

Well-Known Member

• May 17, 2009

• #3

cant rule out nitrogen burn

 

C

cruzer101

Well-Known Member

• May 17, 2009

• #4

Nitrogen burn would be much darker wouldnt you think?

 

D

dtm

Active Member

• May 18, 2009

• #5

i to did think it was a p.h issue, PH pen was last calibrated 8 weeks ago.

 

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cruzer101

Well-Known Member

• May 18, 2009

• #6

I check mine every couple weeks. Its usualy off. May be that.

 

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khmaisoulja

Member

• May 18, 2009

• #7

hi everyone i kinda have the same problem
my plants are about three weeks old and i use the hydro method
my ph is 5.8 and ppm is 700
this problem occured when i was using the dutch master formula calculator
i followed the measurements for my crops but didnt realize it was the totaled mixtures for the plants
i was using just grow gold A & B and the ppm was 900 i notice a day later my leaves started to burn
i tried to flush with it didnt do nothing my plants seems worser
can anyone help out please

 

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jahtrip

Well-Known Member

• May 18, 2009

• #8

bio terra plus is a very rich organic soil....... u might wanna not use too much ferts in it until flowering.... i think its a ph problem along with too much Nitrogen......
Good luck
peace out

 

tyke1973

Well-Known Member

• May 18, 2009

• #9

Flush the plants through it may be a salt or onother build up from the feed,flush the plants and i'm sure that they will pick up.look for a new feed with a high n.p.k.take all the yellow leaves off this may make the plant look bare but they are no use to the plant anymore.and see if all the new growth goes the same i would let dry then rewater has well this could be a root rot issue if you have bombarded the plant with water.

 

D

dtm

Active Member

• May 18, 2009

• #10

tested my PH pen today it was 0.4 out, not much but enough to start problems.

jahtrip, thanks for the info, i used terra pro on my last grow with now problems, it seems now i am using canna nutes it does not do it justice

 

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khmaisoulja

Member

• May 18, 2009

• #11

so should i cut off all the burned leaves?
and when is a good time to flower them its been a month since i germated

 

proheto8008

Well-Known Member

• May 18, 2009

• #12

There is a good thread on what to do here

Its pretty much everything about ph

 

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khmaisoulja

Member

• May 19, 2009

• #13

what happen if my seeding leaves are burned too
theyre bearly a week old and started to have burnt leaves
should i cut off the burned leaves just like my older plants?
dang i thought growing weed would be easy its just the opposite
can anyone help out thanks in advance