Lighting

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  •  · Lighting
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6 hours of rest....
I've decided to take them off of 24 hours of lights and give them 6 hours of rest. Is it also a good…
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    Rick
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  •  · when the leaves flutter in the wind they suck in c02...which helps everything...
  •  · CPW
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  •  · Lighting
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LED Light Distance to Canopy Top or Bottom?
I think most LED manufacturers show PPFD maps at various heights above a 2-D flat plane, typically a…
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    CPW
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  •  · I agree and a SCROG does allow for the most even light distribution. With HIDs I know the range for …

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lights
someone said earlier about my plants being at 600 to 1000 for veg and flower. I'm not sure what that…
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    A
    airplane
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  •  · here are some numbers to look at -- 5000K (+) for veg and 2400 -2700K for flower

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lighting
how close should two 1500 led lights be to each other?
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    A
    airplane
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  •  · check you info on your  lights, every  manufactor has their light distances listed  - what  ever hei…
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HLG
Who all has made the switch to HLG lighting? I love my marshydro lights but if I can get more out of…
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    airplane
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  •  · very good light - consider this __look at their umol/joule  any were for 2.5 to 3.5 is very good if …
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Seedling
What light spectrum is best for seedlings? Full or should I use the color?
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    C
    CakeFan1970
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  •  · You will be able to tell . The plant bends or it stretches finding that happy medium. I am trying mo…
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  •  · Lighting
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LED Watts Per Sq Ft Vs HID Watts Per Sq Ft
Does the old standard of 35watts per square foot hold true for LED's like it did for HID's or is it …
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    CPW
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  •  · Research is saying you get more light per watt from LED's than you do with HID's, of course most of …

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grow lamps
A friend told me he uses a 315CMH and it works better than a 1000w LED any ideas? I am thinking abou…
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    spiderdog35
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  •  · hlg has some good led lights i have the r spec with uv bar in a 4x4 it does great i also have the sc…
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Dwc light schedule for autos
I usually run the lights on a 19/5 schedule for soil grows . Since I'm trying out DWC should I incre…
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    Izigrow
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  •  · 20/4 Option for @ to gain growth and bloom
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ppfd charts
newer site and not too many tests done yet but this site seems to do a fairly good job with their pp…
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    miggs
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  •  · either/or , anyways , light spread out/diffused evenly and as efficiently as possible is our goal i …
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sf-4000 warning , please read if you have one
Spider farmer SF-4000 appears to be a fire hazard. | Rollitup
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    Rick
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  •  · Just an update my sf 4000 has been hanging since January 25, 2021 and no problems and def. no fire! …
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Really good read
Hardly anyone includes autos but this did, surprised me.  I know I know    https://www.420greenthumb…
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    Rick
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  •  · just judging from my last grow they are not going to pernitrate like an HID. Just aint no way. So I'…
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