A light question

[Bender]

My grow box is 3' x 4' and I have both a 400w hps and a 1000w MH. I need to know which one would be best to use or should I use the 1000w just for the veg and the 400HPS to bud. or can I just use the 1000w from start to finish? If I get more air flow I may try to use both but that seems like a lot for a box this size. that would put me to almost 120 watts per square foot. THANKS

Bender Reviewed by Bender on 02-02-2005. A light question My grow box is 3' x 4' and I have both a 400w hps and a 1000w MH. I need to know which one would be best to use or should I use the 1000w just for the veg and the 400HPS to bud. or can I just use the 1000w from start to finish? If I get more air flow I may try to use both but that seems like a lot for a box this size. that would put me to almost 120 watts per square foot. THANKS Rating: 5

[The Student]

Hello,

The first thing that come to my mind as far as the 1000 watter goes, is that it could pose a serious fire hazzard in a small area.

As long as your ventilation is proper and up to snuff, then I would probably go for the 1000 for veg and flower, just watch for heat/fire issues.

Hope this helps.

Peace

[vegasgrower]

If you have money to spend, but a 1000w hps conersion bulb.They are expensive but make a huge difference in bud production, or buy an agrosun mh bulb, it has more of the light spectrum for flowering

[Bender]

Hello,

The first thing that come to my mind as far as the 1000 watter goes, is that it could pose a serious fire hazzard in a small area.

Fire and heat are not that big of a risk. I thought of that before I built this box.

If you have money to spend, but a 1000w hps conersion bulb.They are expensive but make a huge difference in bud production, or buy an agrosun mh bulb, it has more of the light spectrum for flowering

that is something I will definitely look into. Thanks guys.

[Nosehit]

as a rule of thumb MH for veg growth and HPS for flowering is preferable, although you can use either for both flowering and veg.
I have a 250w mh in a cabinet 18"x36"x72" for veg and a 250w hps for flowering also in a cabinet. I can only fit 3 buckets in there so 250 is perfect and I get great yields.

[Bender]

well I'm going with the 1000w MH and I am looking into getting a conversion bulb. I think that would be the best way for me to go

[Torog]

well I'm going with the 1000w MH and I am looking into getting a conversion bulb. I think that would be the best way for me to go

Howdy Bender,

Can one use a conversion bulb without a switch-able ballast ? I have a 1k mh and would like to have a better spectrum for flowering..have ya got a link to a website that has the conversion bulbs ?

Have a good one...Torog

[Bender]

Hi Torog

I have found a few places on line that sells them. they cost about $170 for the bulb. this site has a little bit of info on them. .specialty-lights.

[Nosehit]

Hey good luck bender, 1000watts should be more than enough. I've never used a conversion bulb, keep us posted on how it works for you.

Hey torog, What part of Texas are you from? I'm a little north up here in god's country Most hydro shops carry the conversion bulbs also.
NH

[Torog]

Hi Torog

I have found a few places on line that sells them. they cost about $170 for the bulb. this site has a little bit of info on them. .specialty-lights.

Howdy Bender,

Thanx for the link ! It was very interesting and I would not have believed it-if I hadn't of seen it...lol. I reckon that the thing to do,is to have one of them conversion bulbs handy,when a feller goes to starting the flower photoperiod. But dang..they sure are proud of that bulb ! It's expensive !

Have a good one...Torog