diffusing light

[fphipps]

I posted a few days ago about my acans not doing well under my ATI fixture. I have decided to go and buy some egg crate to diffuse some light. My lights are 17'' off the water water surface. If I do this, should I lower the lights? Or is the amount light diffused by the egg crate not too sufficient?

[RW09903]

I talked with AlanM and he bought these plastic stickers used to frost bathroom windows. He might be able to give you the companies name.

[AlanM]

This is what I put on the clear acrylic that shields my LEDs.  It made the light way more even and supposedly blocks only 5%.  Blends it more evenly than lenses, though, from what I can see.

 

http://www.nano-reef.com/topic/296282-great-diffusion-material-tested-only-5-light-loss-through-water/

[monkiboy]

original poster, where are you located? if nearby, i can stop by with a PAR meter and help you gauge with a bit more certainty/confidence your light penetration to your corals.

[sen5241b]

I have a 150 watt MH 14 inches over the bottom of my 20G long. Too much. I am looking at ways to diffuse also. I saw clear UV overlays used at Marine Scene over an SPS tank.