wietefras
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wietefras

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wietefras was last seen:
Viewing thread 8'x8' grow tent lighting options, Jul 23, 2018 at 3:05 AM
    1.  
      Mary's Confidant
      Mary's Confidant
      Hi wietefras, I saw a reference to your copper water-cooled unit for COBs but I couldn't find a thread with a review. Were you happy with the performance? Unnecessary? I don't want to over engineer so I'd be happy to hear your thoughts.
      1. wietefras
        wietefras
        Well it does work just fine, but in the end I opted for air cooled to avoid the hassle of pumping water around through the fixture.

        Also I have switched to led strips, so I'm working on a new water cooled design with those strips and aluminium square tubing.
        Jun 18, 2018
        Mary's Confidant likes this.
    2.  
      DIY-HP-LED
      DIY-HP-LED
      You mentioned that 46000 Lumens/square meter, what is this in LUX? Lumens/sq meter is a definition of LUX. Would this be correct 46000 LUX, I use 2700K &3500K CLU 048 citizen COBs for flower and would like to know what you think about appropriate LUX levels for flowering.
      1. wietefras
        wietefras
        That would be an average lux over a square meter of 46000 yes. Plants work with photon counts though and that measured in umol/s (PPF) or umol/s/m2 (PPFD). Problem is that 2700K and 3500K have different conversion rates so they would need a different lux/lumen amount to end up on the same amount of light.

        The plants will be fine with something between 20,000 and 70,000.
        Oct 13, 2017
    3.  
      suncity13
      suncity13
      Hi mate, I saw you used these TCI led strips...what is your feedback on those? did you flower with these as well? what grams/watt did yuo get? thank you
      1. wietefras
        wietefras
        I have used them for VEG only. Used the 3000K ones, but I get a bit too much stretch so I will try some 4000K's too and add some 3000's so I can get them ready better for the flowering tent.

        From what I measured, they do really come true to their claim in lumen output. So I wouild say they would work well for flowering too, but I already have flowering lights.
        Sep 10, 2017
        suncity13 likes this.
      2. suncity13
        suncity13
        thank you mate
        Sep 10, 2017
    4.  
      klara niema
      klara niema
      Hi, i made a post in one of your posts i still would like the schematic if possible :p but i wanted to ask something related I was thinking about using a 100k digital potmeter that is controllable via my arduino is this a bad way? do u have more control via the other method? thanks btw
      1. wietefras
        wietefras
        A a digital potmeter would work just as well I would assume. Never tried it though.

        I don't have any schematics, but it's basically an digital switch that you wire up on the output of a PWM capable pin on the Arduino.
        Jul 19, 2016
      2. klara niema
        klara niema
        thanks
        Jul 20, 2016
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