Its comming up on time to replace my 400 watt hps lamps and I was wondering if anybody had tried the ceramic metal hylide lamps? I believe that GE and Philips both manufacture them and from what I have read they have a better spectrum than the standard hps lamps. A comparison grow would be an excellent experiment. I haven't got the room for it otherwise I would do it myself.
Thanks for any advice that you can contribute.
Thanks for any advice that you can contribute.