metal halide for flower vs cfl

badways

Member
i have a chance to get a 400w mh .... from what i hear they are only good for veg. will my finished project be better us mh ?
 

moggggys

Well-Known Member
m/h are fuckin dire , the outpoots so so , the light produced is good only for veg , there hot there........ you get the picture , being honest id use a led over a metal hal any day of the week , hps is the bad boy and your doing yourself a disservice but not spending a little on one and getting returned in kind
 

Turm

Active Member
i have a chance to get a 400w mh .... from what i hear they are only good for veg. will my finished project be better us mh ?

If all you have to choose from is mh or cfl go with the mh. It wont yield as much as an hps but def will more than cfls. MH in flower is said to make the buds quality better than a hps, don't know first hand though.
 

LadyZandra

Active Member
Depends on the brand and the bulbs you use...

There ARE wide spectrum MH bulbs-- only so-so from what I have heard...
There are also single-spectrum bulbs, where you use 1 for veg, a different one for early flower and a 3rd one for the last 3-4 weeks of flower... The single spectrum's are (IMO) a waste of money.... we tried them in Veg alone, and they reduced our plants vigor and yields IMMENSELY!
We went back to CFL's for young plants and HPS for the older ones-- are switching to T5 for older ones once we have the $$$....

But HPS is FOR FLOWERING but can be used in veg if using a wide-spectrum bulb.... MH makes buds fluffy in flower.... FROM MY EXPERIENCE WITH THEM ONLY.....

Use it for veg-- or better yet- get either a dual bulb fixture that holds a HPS AND MH at the same time-- or a switchable ballast that you use for a MH in Veg-- change out the bulb to an HPS and flip the switch for 12/12... worth the extra $60!!!

But- YES- you then have to have a fan and ducting to cool the air flowing thru the hood of the light- or the room heats up and the light has to be further above the plants than optimal.... so figure that into your cost! ;)
 

spek9

Well-Known Member
If you have the MH anyways (and resources to maintain proper temps), use it and flank it with the CFLs :)

-spek
 

badways

Member
m/h are fuckin dire , the outpoots so so , the light produced is good only for veg , there hot there........ you get the picture , being honest id use a led over a metal hal any day of the week , hps is the bad boy and your doing yourself a disservice but not spending a little on one and getting returned in kind


im running cfl but i was thinking of adding a led panel to my grow...could i use the lep bulb for kmart lol???
 

badways

Member
Depends on the brand and the bulbs you use...

There ARE wide spectrum MH bulbs-- only so-so from what I have heard...
There are also single-spectrum bulbs, where you use 1 for veg, a different one for early flower and a 3rd one for the last 3-4 weeks of flower... The single spectrum's are (IMO) a waste of money.... we tried them in Veg alone, and they reduced our plants vigor and yields IMMENSELY!
We went back to CFL's for young plants and HPS for the older ones-- are switching to T5 for older ones once we have the $$$....

But HPS is FOR FLOWERING but can be used in veg if using a wide-spectrum bulb.... MH makes buds fluffy in flower.... FROM MY EXPERIENCE WITH THEM ONLY.....

Use it for veg-- or better yet- get either a dual bulb fixture that holds a HPS AND MH at the same time-- or a switchable ballast that you use for a MH in Veg-- change out the bulb to an HPS and flip the switch for 12/12... worth the extra $60!!!

But- YES- you then have to have a fan and ducting to cool the air flowing thru the hood of the light- or the room heats up and the light has to be further above the plants than optimal.... so figure that into your cost! ;)


i seen a mh on craigslist for the low low... so i was thinking... IS IT WORTH IT... because if i get the same thing with clf then why switch and have a higher light bill
 

althor

Well-Known Member
Yes, if someone is offering you a MH and you are currently using CFL, just say "yes, thank you very much."
 

bignugdoug

Well-Known Member
Yeah i would definitely. go with the mh over cfl. use your cfl for supplementle lighting. you will get a better end result if you go HID. i don't believe. a led from k-mart is gonna do the trick.
 

kushhound187

Active Member
get the mh setup and run this bulb in it

http://www.lighting.philips.com/pwc_li/us_en/connect/tools_literature/downloads/232595.pdf
or the mh you can get...will definitely do better than cfl
Buy a mh.

or better yet, buy a switchable, dimable ballast.

that means it runs mh, hps, abd you can make it several diferent power levels.

mine do 500w, 750w, and a 1000w. dont fuck with anything else. switching dimmies is the best way to go.

order shit from china. you can get a 1000w switchable dimmie, a aircooled hood and a bulb for 220$.

bulbs from china, 30-35$. they are the same as a hortilux bulb. but half the price cause they dont have a stupid sounding name. hortilux just sounds dumb + thier bulb are no better than a phillips or chinese shit. hids are scaled down streetlights. not that difficult to produce.

im not short on cash by anymeans, but i dont waste money on dumb names and shit.
and forget cfls. they are ok for seedlings, but metal halide is better.
 

Flaming Pie

Well-Known Member
I would just use CFLs for veg and HPS for flower.

If you are growing multiple large plants, I have heard good things about using Metal Halide AND High presure sodium during flowering. But that would require 2-3 lights. Kinda overkill for only 1-2 plants.
 

bignugdoug

Well-Known Member
Imo i would use HID's for 1 plant. not overkill like most people would think. i believe you would get awesome results using a 400watt mh for one or two plants. i myself wouldn't use cfl just for the fact that it takes several to even get moderate results. just my 2 cents
 
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