I honestly wouldn’t sweat it too hard.bumping this, since I'm going to play with diffusion panel and SB reef lights. I see that the acrylite product is "uv absorbent." Would this be an issue with absorbing beneficial UV or are they just talking about UV-B and UV-C absorbant. Do we have to worry about the acrylic "yellowing" due to UV?
I did find a polycarbonate product as well that might be a candidate: https://www.curbellplastics.com/Res...hnical-Resources/Makrolon-Lumen-XT-Data-Sheet
I have almost no clue what the acrylic is on my 55. My brown vileda colored up in two weeks. And I have a blue one. (Two years and I found out it’s blue;Facepalm).
I also have 3/4 acrylic lids.
I’ll see if I stil have some with the name brand if you like (#reefhoarder)
And no , no yellowing after two years.