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Egg crate lid?

Discussion in 'General Discussion' started by ShaneP, Jan 15, 2018.

  1. Jan 15, 2018 #1
    ShaneP Williamsburg, IA

    ShaneP Well Known Hawkfish

    473
    Williamsburg, IA
    Ratings:
    +126 / 0 / -0
    anyone use egg crate light diffuser as a screen on their tanks?

    I have a partial piece and put it over mine and it doesn’t seem to really block much, if any light. I expected a dimming but I didn’t really get one.

    I need an easily removable screen top to prevent jumping. I have over the top returns so screens get trickier. Egg crate is easily cut and remains rigid (not in my tank lol)
     
  2. Jan 15, 2018 #2
    Bud West Des Moines, IA

    Bud Loves Bacon Website Team Board of Directors Leadership Team GIRS Member Vendor

    8,876
    West Des Moines, IA
    Ratings:
    +1,818 / 14 / -0
    It likely blocks more than you think it does. Hard to tell with the human eye, but the PAR meter would probably show you a 10-20% decrease or more. Could be a scattering effect also, depends on what type of egg crate - white, black, or mirrored
     
  3. Jan 15, 2018 #3
    ShaneP Williamsburg, IA

    ShaneP Well Known Hawkfish

    473
    Williamsburg, IA
    Ratings:
    +126 / 0 / -0
    Yeah it has to block some. I just couldn’t discern the loss.

    If someone has tried it and measured it, let me know what you found please.
     
  4. Jan 15, 2018 #4
    Dave Des Moines Area

    Dave Experienced Reefkeeper

    1,749
    Des Moines Area
    Ratings:
    +450 / 1 / -0
    I did measure it and removed it for that reason. I don' remember the exact measurements but remover it being around 35% - much more than I thought it would have been.
     
  5. Jan 15, 2018 #5
    ShaneP Williamsburg, IA

    ShaneP Well Known Hawkfish

    473
    Williamsburg, IA
    Ratings:
    +126 / 0 / -0
    Wow that’s quite a bit. Thanks Dave!

    See? I knew one of you guys had tried it. ;)
     

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