Quote Originally Posted by sirruler
..... I do have a 400watt MH bulb (fitting E40) but its colour temp is 4000k. When its on it looks just plain old white and it lets off loads of heat. I guess this wouldnt be any good for my friendly trees
thanks for the tips, its much appreciated:thumbsup:
That's the right type of bulb, and I have heard you can use a 400 watt bulb in a 600 watt ballast but I would not fancy trying it or recommend it as it may be a fire hazard!

Maybe someone can shed more light () on it......

:jointsmile: