MH work in HPS fixture?

xXF0RE20Xx · Feb 9, 2010

ok so, i was lucky enough to have another 150w sun system bestowed upon me. Since the original is being used in my flower area, i have about a 4-5sq ft cab im using for veg, had CFLs in it, but i figured with the new ballast, perhaps i can use a MH bulb instead...So im wondering...

Can MH bulbs be used in HPS setup?

CLOSETGROWTH · Feb 9, 2010

xXF0RE20Xx said:
ok so, i was lucky enough to have another 150w sun system bestowed upon me. Since the original is being used in my flower area, i have about a 4-5sq ft cab im using for veg, had CFLs in it, but i figured with the new ballast, perhaps i can use a MH bulb instead...So im wondering...

Can MH bulbs be used in HPS setup?

No sir, You must use an hps bulb in that hps ballast.

barnzy001 · Feb 9, 2010

CLOSETGROWTH said:
No sir, You must use an hps bulb in that hps ballast.

sorry out of interest what if you brought a kit that was dual spectrum then can you use both bulbs?

pimpin paulie · Feb 9, 2010

they make conversion bulbs

golddog · Feb 9, 2010

barnzy001 said:
sorry out of interest what if you brought a kit that was dual spectrum then can you use both bulbs?

If you are talking about the SH dual spectrum they a big CFL's, very different.

You CAN buy a switchable ballast which will run both HPS and MH, they are very popular.

Peace - :joint:

xXF0RE20Xx · Feb 9, 2010

I really dont have the lewt for another expensive ass bulb....but ill shoot another question, cool to run HPS for vegging?
and i figured id throw these on here for shits and giggles

golddog · Feb 9, 2010

Many people run just the HPS for the entire grow. And grow DANK weed :bigjoint:

Go for it !

Peace - :joint:

xXF0RE20Xx · Feb 9, 2010

golddog said:
Many people run just the HPS for the entire grow. And grow DANK weed

Go for it !

Peace -

sounds like a winner thx +rep

Chronic Connoisseur · Feb 9, 2010

xXF0RE20Xx said:
sounds like a winner thx +rep

It will add about a week to the total growth time. but its worth it.
it also increases yield.

xXF0RE20Xx · Feb 9, 2010

Chronic Connoisseur said:
It will add about a week to the total growth time. but its worth it.
it also increases yield.

thats good to know too

Dr.DankyDank · Feb 9, 2010

xXF0RE20Xx said:
I really dont have the lewt for another expensive ass bulb....but ill shoot another question, cool to run HPS for vegging?
and i figured id throw these on here for shits and giggles

yes sir you can run hps for veg, i do. CHECK OUT SEEMORE BUDS movies, god dam i cant remember if its the first or second one but he pulls massive amounts of bud of a grow with only hps. And i was told that MH bulbs have a pulse start, and hps dont, or vise-versa. So using the non pulse start bulb in a pulse starting ballast will make that bulb burn out quicker. this info is coming from a light and ballast salesman at my work- electrical sales store.

MH work in HPS fixture?

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