Actually i studied up on these tests done with Cree Cob and it looks like anything under 3500 K were actually useless .
And really whats the point ??? of adding suplimental lighting in a make shift hoop house .
If i was in your shoes i would be looking at a real green house and planning make it a winter project .
Find your material for free like i did i build a 12 x 20 green house for free only thing that came out my pocket was actual green house film the real shit not Rona , or home depot 6 ml insulation poly not saying your is idunno right .
Its all about planning being ahead of the curve your defeating the purpose of adding power to a green house unless its off grid .
And i don't think your there yet
Not to many people are worried about supplemental lighting but more about light dep unless there a company or someone going big
grow these out this year take your mistakes and learn from it , plan ahead for next years grow .
Be ready, I know and you know, those plants were planted very late
what do you expect
Get your soil figured out and watering so there is no issues
It takes for some couple years to get things in line
Your doing great plants look ok . Just terribly small lol
I wouldn't worry about adding light really your in Michigan Oct temps are mid 40 - 50's you might as well, get heaters going as well right ???
Where does it end April temps 30 - 45 Your hooped on either end unless you have a real green house with heaters and AC Again where does it end
Seriously and get thinking on how to do better next year couple pictures of 50 gallon 2 months old which i started light dep and another one green house grown 8 weeks old from clone
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