Switch to LED , What problems do you hade/have

Discussion in 'LED and other Lighting' started by Greennner, Feb 13, 2019.

  1.  
    Greennner

    Greennner Active Member

    I just Switched from a 400w hps to a
    Samsung f strips build
    (24 1 foot Double raw strips total 350-450w on 3×3sqf)

    I have to Change some things :
    - exhaust ist now to strong
    -need a heater (just at Summer time i think i dont need em) to get at min 26° C
    -and maybe a humidifier( and watch them everyday ,same like temps)
    - The first day of led , i had the hgl'240's over my light,i changed it at day 2 , and hang them down to get a Bit heat to my plants.(a have about 25-27°Cä


    And in the beginning (like me) i have to finde out the right distance from cannopy to led
    In every stage(rooting,e vegi,l vegi,e Flow,m, Flow, and Flower:)
    Or i will burn down my micro forest


    What problems do you hade/have to solve ???
     
    OneHitDone likes this.
  2.  
    Jeeyah

    Jeeyah Well-Known Member

    I used to stress my plants in veg on a 24/0 light cycle. With T5 it was never an issue. Now I always use 18/6.
     
    Greennner likes this.
  3.  
    Greennner

    Greennner Active Member

    Iam in 24/0 right now :(
     
    warbalig likes this.
  4.  
    boostedhonda

    boostedhonda Active Member

    Don’t kill them with light in veg, hopefully u can dim your light. too much light and stems start turning purple and leaves turns pale and droopy
     
    Greennner likes this.
  5.  
    Greennner

    Greennner Active Member

    Ok so i should put down to 19/5 light cycle
     
    Belko likes this.
  6.  
    boostedhonda

    boostedhonda Active Member

    I run 18/6 but 19/5 works or even 20/4. I like to give my plants some rest everyday
     
    Greennner likes this.
  7.  
    Fake stoker

    Fake stoker Member

    18/6 is the best circle in Veg stage. Plants also need to rest like our humen-beings.
     
    Greennner likes this.
  8.  
    Moflow

    Moflow Well-Known Member

    @Greennner
    Do you have 2 x meanwell HLG 240s?
    Running in a 3 x 3 tent?
    450 watts in a 3 x 3 is far too powerful .
    I grow in a cool area so I keep the lights on 24/0 to keep temps up.
    I use a 12v pc fan in a piece of ducting at top of tent discharging the warm air to plants Below.
    Ive 5 xLM301B strips dimmed ~ 90 watts about 14" from canopy at around 400 umols for aggressive veg.
     
  9.  
    Greennner

    Greennner Active Member

    Yes i have 2 hlg240
    (2 panel each panel is 3 mm aluminium
    With 12 Samsung f strips in each panel)

    Now they Fire +-180w at 3 feet distance (cannopy to led) since day 8 (yesterday)
    Lux meter says 14000lux.

    I live in a cool area Too .
    Till now i get my heat from the room heater.
     
    Moflow likes this.
  10.  
    Greennner

    Greennner Active Member

    Hmm,
    I think it is normal that the Plants Look a Lot lighter then under hps, because of the diffrent light color. They Look a Bit light green.
    Ms 900 with canna aqua ph 5,5-5,8
     
  11.  
    Moflow

    Moflow Well-Known Member

    A drivers or B drivers with built in potentiometer?
    Have you a kilowatt meter?
    I'd dimm both lights down to min , if they're A drivers and get lights closer to plants - less light wasted on the walls.
    Using lux meter you need ~ 20,000 lux - 40,000 for good veg.
     
    PSUAGRO. and Greennner like this.
  12.  
    Greennner

    Greennner Active Member

    I have the A Version , i dimmed it at the voltage adjust screw. (At the amp adjust the Watt dont Go down, at least my Power meter says that)

    I have a cheep powermeter i have 2 diffrent hlg240/24A one from Taiwan one from China
    When iam right, one gets down to 25w and the other min 80w .
    (The funnyest thing is that on full Power (hlg amps and voltage adjust in max , My powermeter says up to 450-500w EACH hlg240
    )
     
  13.  
    Greennner

    Greennner Active Member

    I was wrong with lux
    It says 18000-19000
    Tomorrow i Go a half foot deeper with the Panels , lux meter says 22000 at 2 1/2 feet
     
    Moflow likes this.
  14.  
    Greennner

    Greennner Active Member


    Today i hang the light deeper (1,5-2 feet above cannopy)

    Now they have 25,000-28,000 lux
    And i think 80w each panel (160w total)
     
    Chip Green and Moflow like this.
  15.  
    Greennner

    Greennner Active Member

    Do you still juse your circulation Fan?
    With hps it was a must.
    I dont know if i should juse a Lot smaller one

    Did some of you changed it (with hps to led )?
     
  16.  
    boostedhonda

    boostedhonda Active Member

    Good air circulation is a must either way
     
    Greennner and Rocket Soul like this.
  17.  
    Greennner

    Greennner Active Member


    I want to Switch to 12/12 .
    But can you tell me if the stretch is diffrent
    I just know These Plants under hps
     
    Moflow likes this.
  18.  
    Moflow

    Moflow Well-Known Member

    I've found less stretch under leds than HPS.
    I run them pretty close so that Might be why, others opinions may vary
     
  19.  
    OLD MOTHER SATIVA

    OLD MOTHER SATIVA Well-Known Member

    here is one of the "problems" about leds..and" from china" ones at that

    pre88g13hp.jpg
     
  20.  
    jjess21

    jjess21 Member

    Kinda looks like mine.. what are the problems in this pic?
     

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