I like URI bulbs also, and have used Coralife... I have Coralife 03
Actinics now for my 96 w PC
...I love the color..
Anyway, I got curious and decided to email the folks at Coralife and guess what I received:
To whom it may concern:
I was just informed that you don't actually make the PC
bulbs that you market, and this raises a question...
If this is true, why are the colors of the bulbs so much different than your competitors?
That is not completely true. There is no company in the US that makes there
own bulbs directly. We use our own phosphors for all our lamps so that we
can control the colors. As for the colors being different. We use a
phosphor that peaks in the 420nm range not the 460nm range. We did this
because true Actinic lamps are in the 420nm range. The chlorophyll A
absorption spectrum peaks at the 420nm range and this is the most common
pigment found in zooxanthellae. With all this the lamps do not appear to be
as bright due to the lower 420nm range, but they are giving off the same
amount of energy, we just can not see it.
Hope this helps.
Dave Troop II
Energy Savers Unlimited, Inc.
I just thought I would share this bit of info