Hps vs Mh

corester123

Well-Known Member
Is there any difference in the spectrum with a hps vs a mh, because i would like to veg with hps, also whats the advantage if any of buying the enhanced "blue" spectrum bulbs?
:peace:
 

mrskitz

Well-Known Member
mh bulbs produce a blue light which is great for leaf growth etc and hps produce a red light which is great for flower growth so if you veg with a hps they usually dont grow as fast and if you flower with a mh yeild will be smaller,,,,,you wana use a hps from start to finish,eventhough youll havta veg for a little longer yeild shouldnt be effected,,,you could use a dual spectrum bulb however,which produces both red and blue light,,,,peace
 

panhead

Well-Known Member
According to new information from Ed Rosenthall (spelling) & brought forth in another thread by SeeMore Buds, Metal Halide is a waste of time & offers no benifit what so ever in any stage of plant development.

Garden Gnome did not say this, he was merely trying to figure out what it meant,just like the rest of us,last i checked the thread he was still trying to find an answer from the man himself.
 

Al B. Fuct

once had a dog named
HPS works fine for veg, been using a 400HPS over my mums for about 8 years. Plants veg just as vigorously under HPS as MH but HPS will produce somewhat more elongated mainstems than MH. I prefer HPS for vegging mums in my zero-veg time (for clones) SoG op as it gives me longer stems for my style of cloning. Taller cuttings do better in a SoG style op.

I've used a 400MH conversion lamp on the mums, which worked fine, but yielded much closer internodal spacing and fewer tall stems for my cuttings. I went back to the 400HPS and the MH sits on the shelf.
 

corester123

Well-Known Member
I'm gonna use hps throughout the veg and flowering cycles. I'm just wondering if the bulb with blue spectrum is worth the extra 30 bucks for it. :peace:
 

We TaRdED

Well-Known Member
get a hps system for sure!

you can always buy a MH conversion bulb if you want and see which one you like better for you garden. hps produces more lumen's/watt-aka brighter.
 

corester123

Well-Known Member
I am getting a hps, but i was wondering about the hps bulb, if i should get the more expensive (30 bucks more) "enhanced blue spectrum bulb" or not? do u understand what i'm explaining here?:peace:
 

We TaRdED

Well-Known Member
I am getting a hps, but i was wondering about the hps bulb, if i should get the more expensive (30 bucks more) "enhanced blue spectrum bulb" or not? do u understand what i'm explaining here?:peace:
ya, go for it. some blue is good. plus your probably getting a more quality bulb.

if you have the money, i say go for it. check to to how many lumens it puts out.
 

jonnyk

Well-Known Member
I would recommend a digital ballast,. it saves a lot of money, and its smaller/quieter/cooler/. They sell them at htgsupply.com
 

We TaRdED

Well-Known Member
I would recommend a digital ballast,. it saves a lot of money, and its smaller/quieter/cooler/. They sell them at htgsupply.com
digi ballasts dont have as long of a warranty though... i also heard they dont save that much electricity.
 

Mr Green Man

Well-Known Member
They would only save a small amount of elecrisity, but the bonus is that most will run a MH bulb and a HPS bulb, mine do and it's working out great for me.
 

We TaRdED

Well-Known Member
They would only save a small amount of elecrisity, but the bonus is that most will run a MH bulb and a HPS bulb, mine do and it's working out great for me.
im not sure if that holds true with all digi's. i dont think they all can light both lights
 

Al B. Fuct

once had a dog named
i was wondering about the hps bulb, if i should get the more expensive (30 bucks more) "enhanced blue spectrum bulb" or not?
Not really necessary and especially not if you won't be vegging with that HPS. If you will be vegging with the HPS, the added blue will help shorten internodal distances.
 

We TaRdED

Well-Known Member
Not really necessary and especially not if you won't be vegging with that HPS. If you will be vegging with the HPS, the added blue will help shorten internodal distances.
ya, listen to al. he knows his shit for sure. he's been growing alot longer than myself.

i love you al :D
 

Al B. Fuct

once had a dog named
I would recommend a digital ballast,. it saves a lot of money, and its smaller/quieter/cooler/. They sell them at htgsupply.com
Electronic control gear doesn't save that much power at all. In example, an electronic Lumatek 600 draws 55W less than a standard magnetic- that's a 9% savings. 9% might be significant if you have a lot of ballasts but not generally if you're running just a couple of them.

Doesn't matter how hot or cool a ballast runs (or how big it is) if it is located outside the grow room airmass- which is kind of the point of a remotely mountable ballast, innit?

My roughly 10 year old magnetic ballasts are not totally silent, but they don't buzz- just a dull hum, inaudible more than a couple hundred mm away and certainly inaudible over the whoosh of circ fans. Only really poor quality magnetic ballasts will develop any buzz, due to inductor laminations that are not well secured. Better ballasts have bolted core laminations, which keeps them silent for many years.
 

We TaRdED

Well-Known Member
heh, thanks, sugardumplin.. :lol:

Yep, if there's one thing I do surely know- it's my shit! Pure white, smells like roses. :lol:
aww thanks sugardaddy!!!! hehe

ummmmmm :spew: what the heck are you eating to get "my shit! Pure white, smells like roses. "????????
sounds like fun...


i guess your eating them there kangaroo's from down under in the outback......... haha

:peace:
 
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