how many watt bulb is good for low rider!
Well, that all depends too---but really, the more light the better...always (IMO)
Whatchu got to work w/? whatchu u willin to spend?? I encourage the use of HID lights for any serious grower as those lights encourage waaaaaaaaaay more growth and buddage....400MH veg and atleast 400HPS for flower IMO, for any strain. Never can have too much light... but hid's aren't always practical...
If you must use flouro's--use good quality GROW flouros's (not shop lights or flood lights) that either emit light from both the red and blue end of spectrum, or u can use different bulbs for diff. phases--I believe blue light encourages growth in veg and red light encourages flowering--(i think that's the way it is--hope i'm not backwards)
Ebay can be a really great source for affordable lights of any sort--but flouro's are cheap anyway--
in short, my advice is...as much wattage as you can get away with