600 MH hotter than HPS?

[New_2_Chronic]

Ive got a 600 air cooled hood with lens...ducted from both sides....

the MH is alot hotter than the HPS bulb yet only about half of the lumens.. Is this normal?

 

[Mutt]

shouldn't be 1/2 the lumens but MH's do run hotter than HPS in my experience

 

[Dexter]

^^ agree ^^ plus the cooler ballasts like the Lumatek's you can get for HPS

 

[massproducer]

Lumatek makes electric dual switchable ballasts

 

[BuddyLuv]

My 1000w MH bulbs make my room run about 2 degrees hotter. However I am not sure if it is the quality of the bulbs in comparison with each other. I run sunmaster cool deluxe MH and Agromax HPS bulbs. I did notice a huge temp drop in running the growbright mh bulbs vs. the sunmasters. The growbright bulbs had a real blue color and ran hotter then the sunmaster.

 

[The Hemp Goddess]

Bulbs put out energy as light and heat. Since a MH puts out less lumens, it is putting out more heat.

 

[city]

i talked to hemp yesterday about this.. i have a 400w. mh and wanted a 400w hps. so i went and got the conversion bulb.. it does run hotter. a little less Lumes but still more than the MH

 

[New_2_Chronic]

It is a Lumetek switchable. The bulbs are the sunmaster.....

I say about half....my HPS bulb has 93000 lumens, the MH is 55000, so yeah....almost half....

 

[leafminer]

Goes to show the relative efficiency of the larger lamps, my 150W HPS lamps are about 16K lumens, multiply by 4 and that's 64K lumens, while the 600W (above) is getting 93K if his figures are correct.

 

[New_2_Chronic]

Most 600 HPS I have seen were 88K lumens. The one I have is a more full specturm hps with a whopping 93K.....The more expensive bulbs, or full specturm bulbs tend to have a higher lumen count. Bet you could buy a higher quality bulb for that 150 with more lumens... my bulb alone was 149.00 but worth every penny!.

 

[leafminer]

Good point, thanks!
I have a pair of Day-Bright high-bay types, 150W HPS. "Suitable for damp environments" (just as well ...)
These cost me I think, $30 on EBay, a bargain, including the big high-bay hoods that do a fine job of keeping the light into a tight area. The seller sent me about 4 new bulbs too.
Are there really big differences between the bulbs? Is there a much better bulb I could use in my lamps without paying $$$$$ ?

 

[Fadeux]

Lumatek's can run both MH and HPS without having to change anything but the bulb. Unfortunately, no one makes a 600w MH bulb, so you have to get a conversion if you want to run MH on your 600w Lumatek.

 

[New_2_Chronic]

the conversion bulbs are usually dual spectrum.....