<a href=showthread.php?s=&postid=8818494#post8818494 target=_blank>Originally posted</a> by acroreef123
johnjr,
If all that info was accurate you would have a pretty strong case , but it's not. You say that you would need 15 54w t5s to equal that of a 2x400w MH set-up, but where you slip up is assuming that wattage=light output. When you look on a vendor site they give you the wattage of a light not to tell you the output(even though the wattage can be used to give you a general idea of PAR) but to tell you how much power the light consumes. What you really need to look at is PAR, you need to look at how much par 2x400w MH puts out and how much T5s you would need to equal that par, then you will get a much more accurate reading . BTW a 15x54w t5 set-up w/individual reflectors would blow a 2x400w Mh set-up OUT OF THE WATER any day.
thanks alot, acroreef123