Flourestent vs. Pc?

I was wondering if there was any chart or guide line that would explain the difference between 20w fluorescent and 20w PC. I use alot of fluorescents and am buying more and more pc's but I would really like to know the difference in the outputs. Thanks for all your info gang.

 

Theres a big difference in PAR and depth that they penetrate. I'm no expert but have read some articles on the subject. I'm sure there are some experts in this forum who could explain it better.

 

Briefly, the pc bulbs put out more photons per second in the visible light spectrum necessary for photosynthesis to take place than the regular flourescents do for a given power requirement. For an in depth study I can recomend these two threads...
http://www.3reef.com/cgi-bin/yabb/YaBB.pl?board=lighting;action=display;num=1108066825;start=0
and this one
http://www.3reef.com/cgi-bin/yabb/YaBB.pl?board=lighting;action=display;num=1107241757

Jim

 

I knew asking that question was gonna hurt. I had read that post about ten times and that was just to figure out the big words. WAY WAY over my head. thanks for the direction as always though gang.