S sebae0 Guest Oct 31, 2002 #1 if you are using mh lights do you need a uv shield? or can you just have them above the tank in a canopy?
if you are using mh lights do you need a uv shield? or can you just have them above the tank in a canopy?
broomer5 Active Member Nov 1, 2002 #2 Not 100% sure but I believe that most DE double-ended MH lamps do not have UV protection, where as most SE single-ended MH lamps do have it.
Not 100% sure but I believe that most DE double-ended MH lamps do not have UV protection, where as most SE single-ended MH lamps do have it.
