I have 6 54watt T5s and I am very suprised at how bright they are. I have them staggered in my 180 gal tank. Only problem is I need another atinic bulb. I just got the Jebo's they were cheap enough to start off with, then I can just upgrade the reflectors and ballast as I get money. I have some 400watt MH ballast and capacitors at the house I'm going to see if I can get rid of so I can get some Good Ballasts and reflectors for the setup and just go retro.