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Lamp distance from seedlings? PPFD uploaded in this weeks photos.

CBDAutoGrower
CBDAutoGrowerstarted grow question 4 years ago
How far away I should have my lamp from my week old seedlings? I think it has something to do with the PPFD for my lamp (TS600), but I have no idea what it means. The lamp is set right at the very top of my tent now and is 32 inches (81cm) away. See photos in week 1.
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Setup. Lighting
Setup. Seedling
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Dwckanuk
Dwckanukanswered grow question 4 years ago
No further than 24 id say for the light any less than 400 is death to plants seedlings can actually handle quite a bit of light given that the other things are dialed in and since its led less likely to cause burn
MaxGrowCanada
MaxGrowCanadaanswered grow question 4 years ago
Hey, Mars ts600 at 32" sounds about right. Maybe drop that to 20 inch at half power to save electricity. If you are an android user, "Doggo lux meter" app has been proven effective. From the ts600, you would want to see about 10k lux for seedlings, 35k for veg, and up to 100k for flower. Hope this helps,
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Shagrath
Shagrathanswered grow question 4 years ago
Hi! First couple weeks the plant wont need and can't even handle too much light and to save electricity, I suggest that you bring the lamp to maybe 30cm (~12") and dim it to 30-40%. When the girl has grown bigger you can start to use more power gradually and before flowering you should be at full 100% power. If you are incertain if the used power and height is good for the plant you can watch how she grows and determine from there. If she grows lots of height with long internodes (Stem between the nodes) that means, the plant is reaching for the light and it is not enough. If on the otherhand the plant wont grow much height between the nodes you might haver too strong light. Keeping the light too close can also produce too much heat so it is good to use fan between the palnt and the light
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MrGreenMan
MrGreenMananswered grow question 4 years ago
You’ll be looking for around 100-200 ppfd for seedlings so put it at 18 inches and on maybe 40% power
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