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

__________________
my plumber asked me if i'm growing? and i said huh, what do you mean?he said your looking taller.weird huh?this is a true story!it scared me a little.

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!

__________________
This is all fictional. I am a writer who has seen too many movies to be original. I pretend to grow weed to let an armed Latina down easy!
http://www.rollitup.org/grow-journal...-rockwool.html

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.

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.