cfl or hps

Are there benefits one way or the other? Let's find out. First, keep in mind the rule of inverse square law. The lumes you read for say a 400 watt HPS at 50,000 is only for the first foot, because lumes is the foot power of a candle. Every foot after the first gets weaker by 1/4th. So if the...

hey guys im planing for my first grow... i want to plant 5 plants ''lowryder 2'' in a loft that is 1.20 height Can i grow in 1,20 height? I want to buy my equipment from hydroponics.eu because it behalf me for many reasons... what lamps i must buy cfl or hps? and how many wats needed for...