Metal halide vs high pressure sodium

I have a 600 watt digital ballast, I am currently vegging a few plants, I have a metal halide light that gives off 75,000 lumens, and I know MH bulb has a good spectrum for vegging. But my high pressure sodium gives off 95,000 lumens. That's quite a few more lumens! So which one would really be better for vegging?
 

Cyrus420

Well-Known Member
MH is great for flowering too if your all about quality over quantity.
What benefits does MH have over HPS during flowering? I was under the impression the red spectrum from the HPS is what will fatten your buds up and make them potent.
 

Cyrus420

Well-Known Member
In my experience MH is good for vegging if you want to keep your plants short and squat, the internodal spacing seems to be shorter with MH. An HPS though can be used for the entirety of the grow and you won't suffer at all.
 

Rippified_Mcfried

Active Member
I have recently found that a halide-spectrum seems to affect the cannabinoid/terpene profiles to one's advantage. I'm harvesting a little here and there from my perpetual 12/12 from seed halide-grow and the potency is superior as compared to the usual hps-harvests. Like someone else mentioned, Lumens aren't everything. PAR (photosynthetic active radiation) seems to play a big role here. Long ago I read about this in an old High Times mag. Interesting article, and my current findings are "on-par" :) with that research. Personally I would always trade yield for increased potency, but I realize everyone else may not. This is just my experience regarding the whole issue - :blsmoke:
 

lilzuko

Well-Known Member
What benefits does MH have over HPS during flowering? I was under the impression the red spectrum from the HPS is what will fatten your buds up and make them potent.
You use your MH at the last 7-14 days of flower to boost trich production.

MH has UV vs HPS doesn't have any UV.

The UV helps with the production of trichs, I use a 10k bulb (it's has a lot of UV) on my finishing weeks and I do notice a difference in potency and frostiness.
 

Ford Racing

Well-Known Member
You use your MH at the last 7-14 days of flower to boost trich production.

MH has UV vs HPS doesn't have any UV.

The UV helps with the production of trichs, I use a 10k bulb (it's has a lot of UV) on my finishing weeks and I do notice a difference in potency and frostiness.
Do you use 24-48hrs of darkness before chop as well?
 

slyone

Well-Known Member
You use your MH at the last 7-14 days of flower to boost trich production.

MH has UV vs HPS doesn't have any UV.

The UV helps with the production of trichs, I use a 10k bulb (it's has a lot of UV) on my finishing weeks and I do notice a difference in potency and frostiness.
I have a cool tube, as it is encased with a glass tube how much UV will I be losing or better to use different hood without glass ?
 

slyone

Well-Known Member
OK I will get my other hood out as I can take the glass off and have a go.... Practice makes perfect as is said.... :-) Thank you
 
Top