Cmh

[Friend-of-a-friend]

Hello all. I was curious to know if anyone has experience with and or perhaps done a side by side utilizing ceramic metal halides, and what their opinion. My buddy is really hyping the new CMH's.

 

[umbra]

they work

 

[grass hopper]

buddy at grow store said cmh typically come in 3k or 4k bulbs. they're a wide spectrum bulb that gives a whiter light than usual. cmh lights are used from start to finish(veg and flower)... they are being pushed by manufacturers.. u have to run (2)cmh to cover a 600watt mh.. (3) cmh to cover a thousand watt bulb... they (cmh) will cover a slightly larger area using the added fixtures..cmh do not have air cooled capability. they do have a two year life vs a one year for reg. mh... hope this helps

 

[umbra]

the whole light thing is about PAR. CMH produce more usable light for the plant. In the 400nm to 700nm range, so it's not so much about wattage.