Probably a can of worms...
Lets first ignore any tonal differences induced by normal iron glass vs low iron glass. Does one distort the image any more than the other? By this I mean give it the "funny mirror" effect? Does one have more particulate distortion? (inclusion in the glass that microscopically obstruct view? What makes starfire so superior?
I bring this up because people (afaik) get starfire because it doesn't have the slight green "tint" like low iron glass does. Does this really matter when we use lights that blast our corals with anything remotely close to a 100CRI, 5000K bulb? I can semi see the argument in freshwater where people do actually run high CRI 5-6000k bulbs, but in a reef, we tend to average 15-20,000K with horrible color rendition bulbs. The amount of color change you will experience with low to high iron glass isn't even remotely close to the variablitity of the visual experience from one bulb to another (sometimes even within the exact same bulb make)
Lets first ignore any tonal differences induced by normal iron glass vs low iron glass. Does one distort the image any more than the other? By this I mean give it the "funny mirror" effect? Does one have more particulate distortion? (inclusion in the glass that microscopically obstruct view? What makes starfire so superior?
I bring this up because people (afaik) get starfire because it doesn't have the slight green "tint" like low iron glass does. Does this really matter when we use lights that blast our corals with anything remotely close to a 100CRI, 5000K bulb? I can semi see the argument in freshwater where people do actually run high CRI 5-6000k bulbs, but in a reef, we tend to average 15-20,000K with horrible color rendition bulbs. The amount of color change you will experience with low to high iron glass isn't even remotely close to the variablitity of the visual experience from one bulb to another (sometimes even within the exact same bulb make)