Marywanna said:I also had another question....My friend just gave me 4 100 watt cfls that are 10,000 lumens each. This is kind of a noob question..but although a hps and cfl has the same lumens isnt a hps better? Because im going to be flowering soon and i was wondering since i already have these (40,000 lumens) do i have to buy a 400 watt hps? or can i just flower with these cfls