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Bibb growing loose heads


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Old 09-01-2016, 05:48 PM
Gnomegrown Gnomegrown is offline
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Default Bibb growing loose heads

Hello all Newb here,
I have a good size vertical setup in my garage, (DWC, 2.5" deep), using led, Co2, O3 injection, a/c at 68 degrees water at 66 degrees, 75% humidity using chem-grow 8-15-36 mixed per instructions.

PH is a 6.2 with little fluctuation and nuts are at 650+250 source water.

I cant for the life of me get a tight head of Bibb, the leaves are long with a loosely formed head.

Any ideas on what to do? My oakleaf is doing great, bibb is just taking too long to form a dense core.

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Old 09-01-2016, 05:55 PM
Gnomegrown Gnomegrown is offline
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The big picture
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Old 09-03-2016, 11:22 AM
Gnomegrown Gnomegrown is offline
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Anyone.....
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Old 09-13-2016, 06:49 AM
GpsFrontier GpsFrontier is offline
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Without going through a series of questions I would be willing to bet it's your lighting. I'll bet it doesn't contain the full spectrum of light wavelengths.
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Old 09-14-2016, 03:56 PM
shillamus shillamus is offline
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Bibb types such as Buttercrunch form a loose head; you can harvest anytime, but for the classic Bibb rosette, wait until the lettuce is nearly full size (6 to 8 inches in diameter) and cut it at the soil line.

https://bonnieplants.com/growing/growing-lettuce/
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Old 09-14-2016, 10:53 PM
GpsFrontier GpsFrontier is offline
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I assume Gnomegrown is already familiar with loose leaf lettuce and is referring to abnormally long leaves and abnormally loose heads.

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