hps during veggie stage?

i heard somewhere that using the hps with the mh during veggie stage produces better quality can anyone varify this? also should i be using the mh during the flowering stage? any advice would be appreciated. thanks guys.

it covers the light spectrom more,mh for fast growth hps for tighter nuggs

just get a strong HPS light and use it throughout the whole grow,

u wont have stretching either if the light is strong enough,

It's proven that MH will produce better bud but smaller yields, while HPS produce big yields and less quality bud, so using both in conjunction would be best. Good growers will use both MH & HPS for veg and flowering.

Yup, both are better... but I used just HPs and it was alright....

you can use either for a quck fix. But plants respond better to high k lights for veg and low k for flower. The reason that mh will give better bud at flower is that the uv light the metal halide will put out will force the plant to make resin. Resin is like sunscreen. Cool, huh? Anyway the glass most grow hoods use will filter out this uv light sadly, unless it is quartz glass. Although using metal halide enough gets through to make a diference. So supplemental uv light will give you more resin and thus better buds but yeild will be lower as it needs the red spectrum to gor proper. Thats PROPER, not at all, you be fine. If you are going to clone the girl the stretching the hps will cause in veg will help you there!

It ususally always comes down to what the person can use...and for smaller grows an HPS is plenty...adding to that just makes heat more of an issue in small spaces, which alot of us do.

Eharmony420 said:

you can use either for a quck fix. But plants respond better to high k lights for veg and low k for flower. The reason that mh will give better bud at flower is that the uv light the metal halide will put out will force the plant to make resin. Resin is like sunscreen. Cool, huh? Anyway the glass most grow hoods use will filter out this uv light sadly, unless it is quartz glass. Although using metal halide enough gets through to make a diference. So supplemental uv light will give you more resin and thus better buds but yeild will be lower as it needs the red spectrum to gor proper. Thats PROPER, not at all, you be fine. If you are going to clone the girl the stretching the hps will cause in veg will help you there!

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Not all of us use hoods with glass...It's always been considered taboo where I come from.

the UV from HPS or MH is marginal... i use 1KW hortilux HPS (enhanced spectrum, and higher output) with separate UVB lights... if i put 1KW MH bulbs in the plants dont stretch at all, they actually become too short and bushy - which doesnt work well with my screen

I see it said, over and over, that added UV-b light will produce extra resin - I agree. That's the good news! The bad news is that resin makes you cough and THC gets you high. Resin doesn't = potency - that's just a myth!

I have not been able to find any credible source that indicates that the THC level will be deffinately increased (potency added) by the use of extra UV-b lighting. So, that might be a myth too (but frosty nugs sure do look cool, don't they?

I would be glad to hear from anybody with serious research that indicates otherwise.

T.H.Cammo said:

I see it said, over and over, that added UV-b light will produce extra resin - I agree. That's the good news! The bad news is that resin makes you cough and THC gets you high. Resin doesn't = potency - that's just a myth!

I have not been able to find any credible source that indicates that the THC level will be deffinately increased (potency added) by the use of extra UV-b lighting. So, that might be a myth too (but frosty nugs sure do look cool, don't they?

I would be glad to hear from anybody with serious research that indicates otherwise.

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Thats more or less accurate......strain (variety) has much to do with THC content.....where the resin contains more of the cannabinoids which are contained in minute quantities and have more to do with the effects of the high rather than the potency of the high.......

although from a "bag appeal" perspective people tend to like sticky, resin covered nugs even if it is less potent than some of the alternatives.

Of course, thanks to the world class breeders out there we have access to strains specifically designed for indoor production that under HPS lights produce high amounts of resin and have a very high potency. So no worries there.....

homegrownboy said:

Not all of us use hoods with glass...It's always been considered taboo where I come from.

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you lucky air conditoned bastard J/k. Happy holidays,

I'll go with Ed Rosenthal on this one and stick to HPS lighting. HPS lighting has a better spectrum that the plants can use for both veg and flowering stage. He has run countless control grows and HPS always wins.

T.H.Cammo said:

I see it said, over and over, that added UV-b light will produce extra resin - I agree. That's the good news! The bad news is that resin makes you cough and THC gets you high. Resin doesn't = potency - that's just a myth!

I have not been able to find any credible source that indicates that the THC level will be deffinately increased (potency added) by the use of extra UV-b lighting. So, that might be a myth too (but frosty nugs sure do look cool, don't they?

I would be glad to hear from anybody with serious research that indicates otherwise.

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this is what changed my mind... http://www.youtube.com/watch?v=IPcpt3Be28o

You will probably say this guy is full of shit, and his research is not "serious" - BUT he has some good points that seem to make sense, and for a few extra dollars i'll add some extra light of a spectrum that HPS and MH lights cannot put out... it definitely adds a little something to the bud, it looks more amber than without... the uv may be worthless, but i cant fit any more HIDs

wow hps all the way for flowering

It's been proven that using an MH will produce you more potent bud, but a smaller yield...and that using HPS will increase the yield but not produce the same potency bud...side by side comparison's of the same strain, same age...same everything...the room with both sets of light was the better one. People are really misconcieved about this lighting topic, and need to do some research before commenting. Professiol growers will ALWAYS use both MH & HPS in the flowering rooms...i've seen it over and over again, it has even had an article about this in High Times about a year ago. They also make lights that have both MH and HPS in one tube.

T.H.Cammo said:

I see it said, over and over, that added UV-b light will produce extra resin - I agree. That's the good news! The bad news is that resin makes you cough and THC gets you high. Resin doesn't = potency - that's just a myth!

I have not been able to find any credible source that indicates that the THC level will be deffinately increased (potency added) by the use of extra UV-b lighting. So, that might be a myth too (but frosty nugs sure do look cool, don't they?

I would be glad to hear from anybody with serious research that indicates otherwise.

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The trich's are what carry most of the psychoactive material THC...so by producing more trichs, you're producing more THC. Lab tests prove it...i'm sorry i'll look for the articles and give you links to show you later on.