the higher the wattage though you tend to get more heat off say a High pressure sodium or whatever type bulb you want so you need more ventilation and temperature control, also you would need a ballast to give you all that power so you might choose a light based upon what type of arrangement you have, choose one that bests suites your situation
GrowinGreen23 Reviewed by GrowinGreen23 on . simple question on lights i am very new to growing so my question probably sounds stupid but y does everyone use those high wattage lights.......whats wrong with using a regular lamp? Rating: 5