with grow lights you might want to use cool tube
250 hps vs 250 cfl
- Thread starter egredsox04
- Start date
egredsox04
Active Member
ok, ill have to check it out, and ill have to run the duct to the attic or something?
run it just about any where. you could use the warm/hot air to warm your place but if its in the summer you want it to be as cool as possible
that and the money you have to sink into your grow
Cool air intake should be close to the ground and hot air out should be close to the top
GypsyBush
Well-Known Member
True... but if you need it to be stealth... remember we are talking about a forced air system that is cooling the bulb with outside air, and blowing the heated air out...that and the money you have to sink into your grow
Cool air intake should be close to the ground and hot air out should be close to the top
nothing to do with the cab's ventilation....
egredsox04
Active Member
ok guys, thanks for all the help tonight. i'll be sure to let you know what i end up doin.
take it easy fella's
take it easy fella's
la9
Well-Known Member
I used to think the same thing but anymore I think you can never have too much light.
If you get a 250 you'll wish you got a 400.
If you get a 400 you'll wish you got the 600.
If you get the 600 you'll wish you got the 1000.
The more light the better the results.
A cool tube would be nice but if you pump in fresh air thru a 4" hole and have an exit vent along with a fan moving the air inside your space you should be alright. Unless it is summer time and you don't have air conditioning.
You can only cool down to the temperature of outside air you are pumping in. It most likely will be a few degrees warmer.
If you want you can try without the tube first. The DIY tubes look pretty easy to do and if you go that route let us know because I've thought about doing one myself.
boistlyboist
Well-Known Member
250 watt CFL worked for me. Good luck.
smppro
Well-Known Member
Wow all these people saying cfls are equal in heat??!! No not at all, hps is high intensity while cfl is low intensity, thats why you have to put them so close. Lol if they put out the same heat would people be telling you to put cfls 2in from plant while a hps with a cool tube is still like 6in away. Cfls are far more cooler, my hps with a cool tube got in the mid 80s, and about 95 without the tube. My 12 42w(yes thats more watts than the hps) gets about 79. Trust me there is a big difference. If cfls didnt run cooler there would be no point to them
OregonMeds
Well-Known Member
Because cfl's heat is spread out, HID is one bulb concentrated heat from one source. (and ballast) Same AMOUNT OF HEAT, just spread out very differently.
But no you don't need a cooltube for a 250. Just a good exhaust from the top of the cab and fan inside.
If your internal fan is blowing on the bulb itself you can get that sucker within 4" and not burn. I have one of those $5 clip on fans blowing on mine, cheaper than a cooltube and larger hid's couldn't get that close no matter what without a cooltube.
The ballast puts out quite a bit of heat itself also, but you can remote mount it outside the cab if temperatures are still high inside, try it either way.
But no you don't need a cooltube for a 250. Just a good exhaust from the top of the cab and fan inside.
If your internal fan is blowing on the bulb itself you can get that sucker within 4" and not burn. I have one of those $5 clip on fans blowing on mine, cheaper than a cooltube and larger hid's couldn't get that close no matter what without a cooltube.
The ballast puts out quite a bit of heat itself also, but you can remote mount it outside the cab if temperatures are still high inside, try it either way.
la9
Well-Known Member
Energy goes into the bulb in the form of power = voltage * current.
Energy comes out of the bulb as heat or light.
The light from a bulb goes out into the room, where it lights things up, but eventually dissipates into heat.
This is thermodynamics.
So if two bulbs pull the same amount of current (voltage is usually fixed, at 120 VAC etc), then the two bulbs put out the same amount of heat.
Energy comes out of the bulb as heat or light.
The light from a bulb goes out into the room, where it lights things up, but eventually dissipates into heat.
This is thermodynamics.
So if two bulbs pull the same amount of current (voltage is usually fixed, at 120 VAC etc), then the two bulbs put out the same amount of heat.
no one's mentioned it yet but flower time is longer with a CFL - approx 25-30% in my experience. so that's more time and more money (electricity) for less puff - get the HPS if you can.
saying that I'm using 2x200w CFLs but have no choice - i would trade it in a second for a 400w HPS.
saying that I'm using 2x200w CFLs but have no choice - i would trade it in a second for a 400w HPS.
OregonMeds
Well-Known Member
250w hps 28,000 lumens
250w MH 22,000 lumens
Double, or nearly triple that 200w cfl.
250w MH 22,000 lumens
Double, or nearly triple that 200w cfl.
my friend has had plants been ready almost a week before they were supose to be ready and he was growing in soil and using CFLs
la9
Well-Known Member
You can check out prices here if you want.
$105 for 250 watt HPS
$115 for a 400 HPS
It's not a Hydro shop in case you are one of the paranoid ones. Also it is a flood light, so you'll get people telling you it won't work because it isn't a grow light, but it will.
home
e-conolight Official Home Page
lights I'm talking about
http://www.e-conolight.com/Product/EProducts.asp?ProductFamilyID=3
$105 for 250 watt HPS
$115 for a 400 HPS
It's not a Hydro shop in case you are one of the paranoid ones. Also it is a flood light, so you'll get people telling you it won't work because it isn't a grow light, but it will.
home
e-conolight Official Home Page
lights I'm talking about
http://www.e-conolight.com/Product/EProducts.asp?ProductFamilyID=3
la9
Well-Known Member
Sorry, Bro
I checked the other place I like and they have a 250 HPS, Grow Reflector and digital ballast for $128. $187 if you want a cool tube with it.
HID Hut Light Kits
I'd pick that over the first place.
400 watt kit is $139 and $199.
Definitely the way to go, the stuff is pretty good quality also.
I checked the other place I like and they have a 250 HPS, Grow Reflector and digital ballast for $128. $187 if you want a cool tube with it.
HID Hut Light Kits
I'd pick that over the first place.
400 watt kit is $139 and $199.
Definitely the way to go, the stuff is pretty good quality also.