I have a 2 foot fluorescent light fitting i am looking for a good enough tube for veg _ flowering stages I saw this http://www.lampspecs.co.uk/Light-Bulbs-Tubes/Biolux/2-Foot-Fluorescent-Tube-18W-Biolux-Osram-18-Watt or http://www.lampspecs.co.uk/Light-Bulbs-Tubes/860-and-865-Daylight_2/2-Foot-18-Watt-865-Daylight-Osram would that be good enough? If not which 2 foot tube on that site would be best?