Is it good having the covering lens on or having them off.

Oh and here is it.

500W FLUOREX HIGH INTENSITY GROW LIGHT CFL HYDROPONIC - (eBay item 190147615533 end time Sep-06-07 20:16:47 PDT)

This is what I have.
JohnHerer Reviewed by JohnHerer on . Flood lights question Is it good having the covering lens on or having them off. Oh and here is it. 500W FLUOREX HIGH INTENSITY GROW LIGHT CFL HYDROPONIC - (eBay item 190147615533 end time Sep-06-07 20:16:47 PDT) This is what I have. Rating: 5