Led Lights

[feliciam77]

How far up should I hang a 750wt led light above my two week old plants?

[D.A.A.S.69]

Hello 77, Led light manufacturers rate their lights in a different way. Mine says it got 300 watts but when you plug it in the wall it only uses 145 at the wall, and the 145watts is what you go by, most manufacturers are like that.
What kind of light is yours ?
Is the 750watts at the wall or is that what the manufacturer says?
If the 750watts are the actual power draw, I would start by hanging it at least 26-32 inches maybe higher depending on how your young plants react .
Hope that helps some,what did your light maker have in their instructions?

[Weed Pharma]

Each manufacturer is different- for each light.
You can start at 30" from the top of the canopy and see how the plant reacts and let the plant grow into the light for awhile.

Plants in veg do not need much light.

[qwertyonion]

My 300w, 150w actual says 24-36" from seedlings 24' in veg and 18-24' in bloom. But, I run it a few inches lower than recommended.

[Weed Pharma]

That is about right for 300w LED-
When you get above 600w the distances increase and then again when you get to 1200w LED's.
I learnt the hard way and fried a crop using the same distance for all wattages for LED's.

[qwertyonion]

Definitely, was looking at 1200 and realized it would never fit decently in my current setup. Potential basement build.... Maybe.....

[Cannabliss]

Regardless of what the LED manufacturers say on their packages on how high to hang them or how many watts they claim to have, I always start my LED lights at around 40" above my plants. Especially for 2-week old plants.Then throughout that same day I monitor the plant's reaction to see if they want more or less light. When all is said and done, they usually like starting off between 34" - 36". In time I slowly work my way down to the lower 20's. Monitoring the plant's reaction is important at such a young stage, especially with LED's IMO.

[Madman960]

I started my 1500 watt LED at 40 inches when they were a few days old. They are just coming into the 2 week mark. I now have the light at 22 inches. Lowered yesterday and so far so good. I'm aiming for 18 inches final height but will have to wait and see.

Happy growing.

Madman

[gbauto]

Welcome, Felicia. I give seedlings a bit of distance-30-40 inches if the fixture doesn't have any dimming function. After a few sets of leaves I will lower the lamp 6"/day until I begin to see some light stress/bleaching, then I raise them 6".