LED hanging height

[PLreef]

Hey folks. Question for the masses. I recently received a free light from Hydrobuilder.com because the light I ordered(Spectrum King SK402) was on back order. The free light they sent me was a Covert UFO 150 watt LED. Thought that was super generous of them. I have it over 2 week old autos. The manufacturer says to hang the light at 24"+ over for veg and around 12" for flower. Originally I hung it at 20" because..... well...... apparently I'm dyslexic..... The leaves started showing signs of too much light. I have them raised to around 26"/27" now. Hopefully I didnt stun them too much. Only time will tell. The new light will be here Tuesday. Any thoughts on how high the SK402 should hang? Manufacturer specs are 30" to 42" for veg and 12" to 18" for flower. The new light is considerably stronger light at 440 watts. Should I try to max out the height? Or even higher? 42"+ above? The last thing i want to do is stress my girls out even more. Im growing auto so I know I don't have much recovery time between fuck ups. Hoping you guys have some good insight for me.
Also wondering if all goes well by the time I go to flower, would it be a good idea to hang both lights in the tent? More light more better or will the just be over kill and bleach my whole crop?
Thanks everyone, you guys rock. Jas

[gbauto]

The UFO should be comparable to a single QB setup.
Based on that, typical veg would be 30-36"
I'd try it at 20" during flower.
400 watts of decent diodes in a 3x3 will need at least 20" of headroom, probably more because the 402 is essentially a single point of light.

[MeEasy]

Nice scooter I ride an 07 Heritage..... I would put the king led at max height and lower it a couple inches every day or two eventually to 30inches and once you see some pre flower start lowering it a couple inches at a time again until you get to 18 inches... I'm not sure of what the footprint is on that light but if it's 440 actual watts it should flower a 3x3 fine adding the other light probably wouldn't hurt light is food. As for the height during flower my preference is 18inches and I'm only running 200w and 2 120w blurples I seem to be getting better penetration at 18 than at 12 but I'll bet everyone you ask will have a different preference
good luck

[SoOrbudgal]

Take the safer route till you understand the distances.

[JDU]

Agreed. A lil bit of stretch is better'n burnt tops.

[Covid420]

Buy a light meter on amazon brother

[PLreef]

Nice scooter I ride an 07 Heritage..... I would put the king led at max height and lower it a couple inches every day or two eventually to 30inches and once you see some pre flower start lowering it a couple inches at a time again until you get to 18 inches... I'm not sure of what the footprint is on that light but if it's 440 actual watts it should flower a 3x3 fine adding the other light probably wouldn't hurt light is food. As for the height during flower my preference is 18inches and I'm only running 200w and 2 120w blurples I seem to be getting better penetration at 18 than at 12 but I'll bet everyone you ask will have a different preference
good luck

Thanks man! Mines an 86 Heritage. First year the Evo motor came out. Just got done putting a new starter, exhaust, carb rebuild and a ton of odds an ends. HD = money dump...

[MeEasy]

HD= Hundred Dollars
I got sick awhile back and had 5 heart surgeries in 3 years then as soon as I realized I was gonna live through it I was diagnosed with cancer spent last year fighting that shit. I needed some money and had to sell my 76 shovelhead had to choose one of them to keep decided on the 07 because it rides smoother is easier to maintain and cheaper all around to own

[PLreef]

Buy a light meter on amazon brother

I've been looking recently. Im a little confused about the meters. Theres a million different ones. Wasn't sure if i should buy a lux light meter or a par meter.

[MeEasy]

There's apps for your phone in the Google store that makes your phone a lux meter and they're free

Edit = lux meter is not very effective for measuring LEDs because of the narrow spectrum not visible by the meter..... or some bullshit that sounds like what I said... I'm not as smart as an led light but I know that you won't get a correct reading with a lux when measuring LEDs

[PLreef]

Thanks for the advice guys.

[Covid420]

I've been looking recently. Im a little confused about the meters. Theres a million different ones. Wasn't sure if i should buy a lux light meter or a par meter.

The chart I posted is from GWE and is recommended lux reading. Par seems overly complicated to me personally. I got.the knew gwe recommended. Watch for sales.

[JDU]

Manufacturers recommendations will be in the box. Start there & adjust to YOUR plants desires.