i have used regular flouros with a 50/50 bulb and a actinic 03 bulb totallign 80 watts on a 55 gallon fuge and it worked great, IMO it all dpends what you use the fuge for. If you have cheato it wont grow very much or if at all but will live and do just fine IME. I also kept cheato in my old wet/dry under a regular shop lamp and it also did just fine but didnt grow.
however i keepa lot of coral in my fuge so i now upgraded to a 211 watt MH/PC combo but as i said it all depends what you do with your fuge i guess!