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View Full Version : 400-watt MH/hps Conversion lamp question ...


the image reaper
10-14-2007, 12:27 AM
I just bought a pair of these, for $35 apiece ... can anyone tell me if they run at a hotter temperature than my regular 400 HPS lamps ? ... 400 Watt Metal Halide - Operates in LU400 High Pressure Sodium Fixtures Only - EYE #51837 Light Bulb (http://www.1000bulbs.com/Metal-Halide-400-Watt-Conversion/4539/)
the image reaper
10-14-2007, 09:59 AM
nobody ever used a conversion bulb, and noticed a heat difference ?
RhinoGrowUK
10-14-2007, 10:04 AM
Yeah i did but strangley the MH seemed cooler !
RhinoGrowUK
10-14-2007, 10:06 AM
I take it your using it for veg ?
the image reaper
10-14-2007, 11:00 AM
MH for veg .. HPS for flower ... I just cant spend the money right now for another ballast, etc., so I ordered these 400-watt conversions, for now ... I had just assumed they may run hotter than a 'regular' HPS, wondered if anyone knew ... regardless, I'll know for sure in a few days ... :smokin:
xcrispi
10-14-2007, 03:13 PM
Good deal on a conversion bulb :thumbsup:
Dutch:pimp: was just diggin around looking into them too . I think he was looking into the ones w/ a built in reflector though = more $$$$$ ? = short term memory . :bonghit:

He might have run 1 already to test it out for temp. chgs. in his space regardless of having a hard time germin beans this grow - he might have feedback ?
Peace bro.
Crispi :stoned:
the image reaper
10-14-2007, 04:50 PM
I was within seconds of topping out the old credit card on another new ballast and MH setup, when I remembered the 'conversion lamp' option ... my present ballast is only 1.5 years old, w/5 year warranty, so I couldn't justify another one, yet ... I guess it doesn't matter much, how hot it runs, I'm gonna run it anyway :D ... research tells me I should get in the habit of wearing UV protection around them, and watch for cracks in the globe ... just what I need, another health hazard :wtf: ... thanks for the help, folks ... :smokin:
Dutch Pimp
10-14-2007, 07:37 PM
I'm gonna test my CMH bulb...in a few days...took forever to germinate seeds....4/10...:(

Wow ...$35 for a 400 conversion bulb!!!...I've been shopping in the wrong places.
the image reaper
10-16-2007, 04:00 PM
right here, DP :
400 Watt Metal Halide Bulbs (http://www.1000bulbs.com/400-Watt-Metal-Halide-Bulbs/)

they're in Texas, I've bought quite a few things from them, very good outfit ... when I had a broken sodium bulb arrive, they immediately sent a replacement, and a UPS Pickup Tag, for the broken one ... :thumbsup:
Dutch Pimp
10-16-2007, 05:47 PM
right here, DP :
400 Watt Metal Halide Bulbs (http://www.1000bulbs.com/400-Watt-Metal-Halide-Bulbs/)

they're in Texas, I've bought quite a few things from them, very good outfit ... when I had a broken sodium bulb arrive, they immediately sent a replacement, and a UPS Pickup Tag, for the broken one ... :thumbsup:

...that will be my next choice if this CMH bulb don't fly...:jointsmile: