MH or HPS?

[HydrO PasSiOn]

if you could only chose between a MH or a HPS for your whole grow which would you chose? i only got enough money for one right now at the moment and wanna know what you guys would do. thanks

 

[123lsd]

I just copied this from http://www.cannabisculture.com/articles/2611.html

Yes. Using Metal Halide (MH) lamps in any stage of growing is a waste of time and money. More total light useable by the plant is produced by High Pressure Sodium (HPS) than MH lamps, so plants grow faster using HPS lamps alone.

When HPS and MH laps are lined up in rows in a grow room, you can see the "wave effect." The plants under the MH lamps do not grow or weigh as much as the plants under the HPS lamp.

No formal studies have been performed to see if different visible light spectrums affect taste or potency, but anecdotal evidence suggests that it doesn't.

The only reason to use an MH lamp rather than a HPS is to avoid the suspicion that a weird-colored light may arouse.

 

[HydrO PasSiOn]

123lsd thanks man : )

 

[northernlightssmokn]

Wow Excelent thread!! Any one else know of any proof that suggests hps for vegging is MORE effective than m.h.???

 

[HydrO PasSiOn]

thanks for sayin its a good thread NLS : ) yeah i wanan figure out about that too bro because 123 just brought some nice info to this thread and you and i both asked good questions so lets see how things turn out later down this thread

 

[DLA]

I just copied this from http://www.cannabisculture.com/articles/2611.html

Yes. Using Metal Halide (MH) lamps in any stage of growing is a waste of time and money. More total light useable by the plant is produced by High Pressure Sodium (HPS) than MH lamps, so plants grow faster using HPS lamps alone.

When HPS and MH laps are lined up in rows in a grow room, you can see the "wave effect." The plants under the MH lamps do not grow or weigh as much as the plants under the HPS lamp.

No formal studies have been performed to see if different visible light spectrums affect taste or potency, but anecdotal evidence suggests that it doesn't.

The only reason to use an MH lamp rather than a HPS is to avoid the suspicion that a weird-colored light may arouse.

Hey 123lsd...I just wrote an email to the idiot that posted that statement on that site.. He couldn't be more wrong. I am amazed he put that up to mess eveybody up like that.
Seriously if what he said was true and common knowledge to us growers then why in the world would we even talk about MH and all the wattages, types, brand, system, cooling and such, because of the color people might see? jeez what an idiot he is.

Please if your going to post it then know it.

 

[HydrO PasSiOn]

hey DLA so that info is wrong?

 

[THCskunk]

Everyone knows that MH has higher Kelvin temp. its what is needed to grow strong and sturdy. HPS has less kelvin temp but almost equal amount of lumens producing a red spectrum light which enriches the total activation and movement of sugars and nutes to flowers and trichomes. Results can cause the plant to point out its leaves in a spikey manner and the flowers to really swell. I would get an HPS if I was you. But if you can come up with the money later on to get both, get the Metal Halide first.

 

[DLA]

hey DLA so that info is wrong?

Unequivacaliablbly....

Uh Big Hit. Sorry I mean unequivicaliblityabetylity.

 

[Hick]

I have to agree with DLA. It isn't a matter of "opinion"..it is science, Undisputable scientific evidence shows that the higher 'blue' end spectrum, is preferrable dureing veg.
HPS "will" do a satisfactory job by itself through an entire grow. But, so will a MH. HPS is 'usually' preferred as an only light.

 

[3patas]

no my friend but if there any more choise go for it but they have a new sistem out that will work both lights mh & hps for both stage

 

[Fretless]

What is your budget? Prices vary considerably.

 

[HydrO PasSiOn]

i dont really have a budget but at the moment money isnt really rolling in. right now the budget is around 220 but will increase within the next month or so. thats why i asked what would be more helpful

 

[LaserKittensGoPewPew]

You can buy a 400w HPS system from HTGsupply for 109+40 shipping. You can take the rest of that money and buy 6500k CFL bulbs to veg your plant. Metal halide lamps aren't the only option for vegging. I bought 65w fluorex floodlights for $27 a piece. They each put out 4550 lumens at 6500k. It depends on the size of your grow space that will decide how many you would need.

 

[Fretless]

I agree about the CFL's for veg. Though I think the 42 watters at $10 each are more light for the $. We who have tried it have had amazingly good veg results with CFL lights, as dense and healthy as you could ask for.
If I was you, I'd get 3 or 4 CFL's, grow only around 6 plants, and get them started. Keep saving, and get yourself an HPS for flowering. A lot of course depends on space and security. Scour the net and the threads during early veg to get your growing area worked out - space, security, and growing style will determine which wattage(s) will be optimal for your situation.

 

[bombbudpuffa]

Go here-http://www.insidesun.com/index.php?action=category&id=2You can get a 250w mh for $90, reflector and bulb and a 400w hps for like $100, reflector and bulb included...best deal you're going to get!

 

[theyorker]

Why not use flourescents for the entire grow? You can use the 6500K bulbs for veg and switch to 2700K when you start to flower.

 

[3patas]

hey guys this are my plant grown under 10 - 4 feet tube & 2 - 18 inch tube combine between red & and blue spectrum they are only 31 days old and they are on there3 day on to flowering here some pics what you guys think?

 

[LaserKittensGoPewPew]

BFB- But are those 42w 6500k temp bulbs? All I saw when I went to home depot was 2700k rated bulbs.

 

[TURKEYNECK]

I've flowered under my 400MH with really good results...Using fluro during flower HAS to effect yield and potency no matter how many lumens you cram in there, just not worth it if you ask me.
If you're ganna risk your freedom don't half A55 it. IMO