600W Hg HID

We set up our light today and I tested out both bulbs we got. They were given to us by a friend and he gave us one 600W HPS and a 600W Hg. I've never heard anything about the Hg lamp before, but when plugged in it's brighter, quieter and cooler than the HPS. I 'm feeling we'll end up using the Hg (mercury right?) for our first grow.

h.g .is that like hid metal h. i think there better for when flowering. waht color bulb is in the hps. you would be able to grow all the way with hps. are you only going to use only one lite.

yeah, just the one light. our canopy is only eight square feet.

did some reading on the light thread and it seems as though it's a mercury vapor bulb.. although that doesn't explain why it's brighter than the hps..

either way both bulbs are used and have the black scarring lamps get with time. depending on how well temps go we might do the hps instead though..

we just can't check the temps overnight because our fan fell down from the ceiling today due to the fact it was mounted on drywall without the expanding screws. after a trip to the hardware store tomorrow it will be back up. we'll be done construction tomorrow afternoon before we leave for work, and we've started germinating some bag seed (22 seeds, varying strains but mostly blueberry hybrids) in case we can't get clones soon. who knows, we might keep some of the bag seed plants anyway.

id go with the hps.
what colour is the bulb.
e.g 400hps growlux red spec for flower or blue spec for vegg.

they're both red spectrum.

knowing what i know now, i'm probably going to use the Hg for veg and the HPS for flower.

bluewizard said:

they're both red spectrum.

knowing what i know now, i'm probably going to use the Hg for veg and the HPS for flower.

Click to expand...

are you talking about the mercury vapor lamps,if you are you are going to find that they only do half the job of an hps.

Hg is not a lamp type, it is a chemical symbol meaning there is mercury in the bulb itself. (mercury is a compound inside the bulb to make it ignite)


you probably have two hps lights

Can you take some pictures of the lights/bulbs so this can be cleared up. If you have a mercury vapor light, they are useless, they produce less light, the incorrect light spectrum and are expensive to run compared to hps for growing. thanks