need help with yellowing

fatty nug sack

fatty nug sack

Member
Can anyone help! my plants seem to be turning yellow. they are almost 3 weeks into flower... Under 2200 watt hps. feed every other watering. why the yellowing? 20120928_162948.jpg20120928_162819.jpg20120928_162732.jpg
 
D3monic

D3monic

Well-Known Member
They going to need a whole lot more info....

What exactly are you "feeding" out? how much? lights? soil? ect.
 
er0senin

er0senin

Well-Known Member
is it yellowing on top or bottom first? as stated more info. A lot more. Every detail you can think of
 
SpicySativa

SpicySativa

Well-Known Member
Without seeing a close up of one of those leaves, I'd say your plants are BEGGING for nitrogen. Did you switch to a bloom nute with very low nitrogen as soon as you flipped to 12/12?
 
SpicySativa

SpicySativa

Well-Known Member
Did you switch to that biothrive bbloom as soon as you flipped to 12/12? It's pretty low on nitrogen. Plants use LOTS of nitrogen during the first couple weeks after you flip to 12/12.

I still think they want nitrogen.
 
SpicySativa

SpicySativa

Well-Known Member
They may not darken up much, but you can at least prevent further yellowing by giving them a full dose or two of the biothrive grow.
 
Kybudz

Kybudz

Well-Known Member
SpicySativa said:
Did you switch to that biothrive bbloom as soon as you flipped to 12/12? It's pretty low on nitrogen. Plants use LOTS of nitrogen during the first couple weeks after you flip to 12/12.

I still think they want nitrogen.
Click to expand...
I agree 100% with you.i always give veg nutes atleast 2 after i switch. Learned that hard way .
 
Po boy

Po boy

Well-Known Member
classic N deficiancy sympton. can u get Jack's 20-20-20? it's an excellent in keeping plants looking great. GL
 
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