So I took some more photos - FWIW I was running the wide angle LEDs in the previous photos. For me at least the narrow angle LEDs were in the black sleeving.
Clear tubing with water (3/8ID 5/8OD tygon (pure zero plasticizer stuff which btw is too small for the fittings))
Evening with lights turned on, power off and then on:
For reference the tube is 2ft long. The left one seems a bit brighter, I tried wiggling the right one to see if the angle was just a problem but not much changed.
Evening with lights turned off (30s exposure), power off and then on:
There is some light bleed because I left the door open, in reality the room is pretty dark, not enough to trip over but you aren't going to be reading anything.
In reality the exposure was too long in the 2nd photo, really it doesn't look as blindingly bright as the photo makes it out.
Clear tubing with water + Mayhems X1 Dye at recommended concentration
I won't even bother to show the daytime ones as there's almost no difference with the LED on or off.
Evening with lights turned off (30s exposure), power off and then on:
Same camera settings as before:
Most of the red glow on the left side is actually the PSU.
So I can't recommend these when using dye, if anything it seems a lot worse than colored tube. For dark cases in dark rooms they'll work a treat though as long as you stick to clear tube and water.
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