lol no its perfectly safe to use a 400watt in a 600watt ballast :thumbsup: i sometimes run my 250watt bulb in the same ballast, As long as you dont try to put a bulb of a higher wattage into it then all will be well :jointsmile:
only trouble is the heat from my MH bulb is too great even from a distance of 3ft it cooks the top of the plants and i dont have a shade with a cooler its just the normal open shade.
sirruler Reviewed by sirruler on . Veg Lighting Ok this is a topic thats driving me nutz. I bought a 250watt SON T AGRO (HPS) as a veg light but when the light is on it doesnt look very blue to me infact it looks yellow and more like a flowering light which in turn makes the plants too tall and spindly :mad: They take too long to grow under this light and i am wondering if anyone can give me any pointers for the 'best' blue veg light to use? I don't want one of those energy saver lights cos i heard they are great when directly on top of a Rating: 5