hi Todd, this is a very useful talk...
i was running my 250 Radium /Icecap combo from march to november and some corals havent enougth color to me, and the light was not so bright as i expècted...
on the first week of nov i turn to a 400 w Radium/Lumantek and just 2 weeks ago, i put a pair of 96w PC 460 nm...my tank looks blue, but nice...the best part its that some corals began to shown a better coloration, even colors that i didnt know they were...(the only backup its a Seriatopora histrix that became palid rose from a intense one...im thinking in move that coral to a place with less ligth...)
this Stylo always was white/green...look at the tips now...and i hope the change includes the rest of the coral...
the way my tank looks...using only a spider reflector, i cover all the tank (40x20x18), and that let put some nice LPS in the sheded areas...
have some qs...
1.- is it a good choice of ballasts the Lumatek for the Radiums???
2.- when should i replace my bulb, about 6 to 8 months???