three weeks into flower, up nute dose? fft

Hey guys im week in late second early third week flower and have an issue. The leaves are like a yellowish in the center of the blades and a darker green on the outside of the same blade. I've been feeding with fox farm trio 1/4 tsp big bloom 1/4 tsp tiger bloom per gallon. Im rather sure she needs more but I want to make sure kinda hard to see what I mean in pic due to lights. She's also kinda clawing temps are always low 80s max high 70s max lights on and usually about 68 lights off. All input on appropriate dosage appreciated.20140324_222108.jpg20140324_222152.jpg
 

jaybray

Member
Are you ph water? She looks good. I see the lime/yellow and the clawing. Does the big bloom call on more than 1/4 per gal? Its been along time since I used FF.
 

SableZen

Well-Known Member
Iron. These iron-deficient leaves (see Web Figure 5.1.L) show strong chlorosis at the base of the leaves with some green netting. The most common symptom for iron deficiency starts out as an interveinal chlorosis of the youngest leaves, evolves into an overall chlorosis, and ends as a totally bleached leaf. The bleached areas often develop necrotic spots. Up until the time the leaves become almost completely white they will recover upon application of iron. In the recovery phase the veins are the first to recover as indicated by their bright green color. This distinct venial re-greening observed during iron recovery is probably the most recognizable symptom in all of classical plant nutrition. Because iron has a low mobility, iron deficiency symptoms appear first on the youngest leaves. Iron deficiency is strongly associated with calcareous soils and anaerobic conditions, and it is often induced by an excess of heavy metals.
Just some things to check: Are you possibly over-watering? Supplemented too much calcium? Check run-off pH (iron is one of the 1st things locked out by a too high pH often from the addition of lime)?

Did you just start using the FF nutrients recently? If so, how did the plant look before you started?
 
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