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Grow Questionsligh distance

ligh distance

groweroftsushimastarted grow question 3 years ago

I have a cabinet w/ 0.6x0.86x1.6meters and I'm using a quantum board 200w ( 300pcs Samsung LM301H 3500k e 36pcs 660nm (deep red)) . What distance should I keep on the flowering ( auto flowers week 7 ) thanks. happy growing everyone

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TJshortstop24answered grow question 3 years ago

That is a general distance for a 200 watt LED. Depending on what brand light you have and how good the light coverage is for that LED light you have, you can probably give or take a few inches. I use a 200 Watt Spider Farmer sf 2000 and thats the distance I use and the distance they recommend. Not every 200 Watt fixture puts out the exact same intensity or spread of light, so find the recommended distance for your fixture and go from there. Like on mine, they recommend 18 inches during flower but I usually end up at about 16 inches. The PPFD is right near 1000 at that distance which is perfect without having to add CO2 and a crazy amount of nutrients.

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TJshortstop24answered grow question 3 years ago

During late veg/preflower you should have them around 24" from the canopy. Then start lowering light down very slowly every day/other day to about 18 inches during flower.

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