[quote author=Elite link=topic=6988.msg90974#msg90974 date=1237662884]
I heard the 20K reeflux is really suck though. very low par...
[/quote]
I don't know, has it been tested yet? I'm not really too concerned with PAR with the reading I've been doing lately I really don't need a super bright tank, I want it to look good and get deep colors from my corals. I have seen them side by side with different bulbs and they seemed brighter than other 20k bulbs. I also think they vary greatly depending on the ballast. At Chris's he's got two side by side and the one on the IceCap screams, it's super bright.
Guilhan, the reeflux seems to pump out more 460nm versus the 420nm range that the Radium excels at. Yes the ATI is T5 bulb with a 460nm spike.