Help! yellowing on veins

[happily]

First off, great site. I'm a noob and love the autos based on space restraints. I will be employing many of the great info in the future.

I have grown a few before with MG potting soil and tomato/flower nutes. slow and small but they made it. I had 6-8 23w cfl 5600k plus 10 40w tubes. 2 wks ago I added 4 2700k cfl's. ten days ago I moved into a closet because of company in the house. last week I added a $109 135w(90 actual) led six or 7 spectrum light to the mix. I've always ran 24/0. I turn a few off 4-6
hours for slight temp. drop. I feed maybe once a week. have not fed epsom for a few weeks at least. 3 days ago I trimmed a handful of fan leaves off each because they're stretched and bushy to fit them tightly these are auto lowberry's.
Last night I noticed yellow veins from the base outward. A few twisty leaves mostly on non yellowing plants. 4-6wk old plants are yellowing. 8 wk budded plants are green but show some twisty leaves. Figured underfed so I gaved some 18-24 16 and epsom last night and shut off led for the night. they've drooped and gone a little crispy over night
My thoughts are cold floor, air temp is 65 night and 78 in the day , LED, Underfed or ph I've been using soil probe (says 6.8ish)

 

[happily]

lights are between 8 and 30 inches from affected plants it yellows all new shoots top to bottom

• 8 Bands for Indoor Plants Growth & Flower
• Spectrum of Light: 430~440nm, 450~475nm 620~630nm, 650~660nm, and white
• LED Output Power: 45pcs*3watt
• The range of power consumption under 110V: 85W-90W; 220V: 83W-88W
• Dimension: 270mm*270mm*60mm
• White painted casing.
• Lifespan: 50000-100000 hours
• View Angle of leds: 90/120°Mixed
• Worldwide Voltage: AC85~265V
• There are white, blue and red LEDs inside our LED grow light

 

[stylez]

What do they get fed, are they getting nutes at all. The second pic looks pretty good, that one seems to be farther along, in that case the yellowing is normal. The other two pics looks to me as they need fed.

Much Luck
​

 

[GoAuto6]

I noticed no mention of you'r ph, hope this helps....

 

[happily]

1tsp per gal miraclegro every 7-10 days. Looks most like iron and sulfur deficiency or the pictures of hot to cold in the self diagnosis. yellow on 4-6 wk old plants and twisted on the 8 wk budded plants. I suspect the Major improvement for the cfl's to led has created a need for much more nutes. 1 gallon pots with MG potting soil and vermiculite

 

[happily]

What do they get fed, are they getting nutes at all. The second pic looks pretty good, that one seems to be farther along, in that case the yellowing is normal. The other two pics looks to me as they need fed.

Much Luck
​

yeah 2nd pic is almost full term but they green ones show the twisted leaves

 

[namvet25]

http://www.growweedeasy.com/marijuana-symptoms check this out. The closest i can see it's a potasium def.Flush with ph water and recheck ph.Check runoff not the soil.Runoff should be around 6.5. Then give here a light feeding of balanced nutes with higher potasium content and see if this helps.

 

[stylez]

I would say, they need to be fed some more:gthumb:I know MG soil is no good to use, dont know about the MG nutes Check the NPK value, they are still vegging at the moment.
6.8 soil ph is so so, but you could have one of those plants that wants a lower ph, maybe. 6.5 should be your target. How big of pots are they in.

 

[happily]

1 gal pots.... ph may be a little high and they be underfed now that they are getting some quality light. Is running 24/0 too much as well. I have a tablet water tester, ecm pen and a soil probe. I'm guessing none of these are effective for ph?

Thanks everyone for all the input (with the yellow veins I didn't want to panic and guess)

 

[GoAuto6]

1 gal pots.... ph may be a little high and they be underfed now that they are getting some quality light. Is running 24/0 too much as well. I have a tablet water tester, ecm pen and a soil probe. I'm guessing none of these are effective for ph?

Thanks everyone for all the input (with the yellow veins I didn't want to panic and guess)

depend's on the quality of the probe...6.8ish is kinda high.. I'd shoot for 6.3 to 6.5..