125w cfl -vs- 70w hps which one is hotter?

[dark horse]

So I'm not looking for speculation, I was wondering from those with experience, which one would cause more heat buildup inside a cab? I"m not talking about the actual temperature of the bulb, I just mean the overall heat inside the box? Is there a significant difference though?

 

[zingablack]

cfls always had my temps sky high since they are internally ballasted. i switched to a 150hps awhile back and my temps dropped.

 

[Oregonism]

Lot of "if's"

what size of space and materials used
Shape
fans, fan size
outlet size
outside temp/humidity
etc. etc. etc.

The only answer you can hope to receive with such a generic response is "speculation".

One person might run hotter 125 cfl's and one might run hotter w/ the 70.

 

[dark horse]

ok let's put it this way. if you put a 125w cfl and a 70w hps inside a small sealed box with no ventilation, which one would get to 100 degrees fastest?

 

[trem0lo]

my vote goes for the cfl.

 

[Oregonism]

ok let's put it this way. if you put a 125w cfl and a 70w hps inside a small sealed box with no ventilation, which one would get to 100 degrees fastest?

I was going to put it this way, but still when you get to the nitty gritty it is impractical and not real world at all.

[Just trying to figure this out, what your reasoning is?]
Why would you envision that scenario to begin with? I get the question, to an extent. I am guessing you won't be using a sealed box with no air, so what good would those results be anyway?

What if the box was rectangular instead of a perfect square, 6 26w's might make more sense [because say for example, circulation is better for negative pressure] over 3 42'w's or 1 70w in that particular space, but in a perfectly square box, the 70HPS, might be the better fit.

See where Im going with this [alot of variables......], maybe you could provide the shape and dimensions in the ballpark of what you are expecting, that could be the biggest help.


In lieu of that I was going to suggest counting amperage and you would have a rough answer. More amps = more heat.

 

[dark horse]

Let's say the box is 18x18x35" and the debate is between 70w hps overhead to do sea of green, or, doing a vertical 125w cfl single bulb with plants surrounding it. And a pc fan up top...and of course with a carbon filter.... I'm feeling like either one would work for the dimensions, but, the HPS would yield better nugs and more weight, so I'd like to go with that but only if I can

 

[dark horse]

cfls always had my temps sky high since they are internally ballasted. i switched to a 150hps awhile back and my temps dropped.

Now that I read this more carefully, areyou talking about putting the hps ballast outside the box?

I'm talking about sticking the whole hps unit inside the box, ballast and all -vs- a cfl

70w vs 125wcfl

 

[sgapetti]

you should consider placing the ballast outside the cab if you can, a possibility you do not have with cfl. However, with cfl you can get really close to the plants. My cab is to small to consider hid lamps , i like to keep things easy, i can't use noisy fan ( stealth ) and i love lower temps ( better terpens profile ) and so on. Most important in my space ( 14 x 14 x 28 ) is to keep internodes very close, a easyer task with cfl than hps. Whatever you choose , is all about environment and dialage and the right strain to your grow method. IMHO cfl are more easy to work with in small spaces and vertical is the best way to use them.

a shot from my last run
Ceck out my signature for links if you need some inspiration.

Peace S

 

[dark horse]

^^^ that is great, what did you make the cage from?

my problem with putting the ballast outside the box, is that I don't trust my electrical ability, it seems very complicated and the risk of shock

 

[gloryoskie]

^^^ that is great, what did you make the cage from?

my problem with putting the ballast outside the box, is that I don't trust my electrical ability, it seems very complicated and the risk of shock

The cfl is a good first choice, after that PL-L,
then a 150 watt hps. The advantage of remote
ballast is worth some time to learn the wiring
stuff you need to know. Both the PL-L and hps
can be remote ballast.

Hps can be intimidating. I wired mine remotely
with a magnetic ballast, worried for sure I
would get glass in my face from an exploding
bulb.

Bench tested, outside the grow area, worked
perfectly the first time. Lit it and wow, what
a huge difference. Need shaded goggles to
work while lights on.

Plenty of threads to look at that explain how
to wire, always at your own risk, natch.