Is this too much?

[Guest]

Would two 600 watt HPS in cooltubes be too much for a 3x4x4 cab?? I know the wattage per foot is 100 but do you think one could keep the temps down with the proper ventilation?? Or would it be better to go with one 1000? I hear that cooltubes are cool to the touch so I dont see how a 600 or a 1000 would be a problem, but I would like to hear what other people have to say...Thanks

F1

 

[Guest]

it would be great if you could get more height on that cab...but yeah it should be great with the 600.. a little more vertical room would be better though

 

[Guest]

well I will be growing SOG so I dont need too much height. I would rather go with a 1000 then just one 600 cause I get more watts per square foot. You think that I could keep the temps down with a 1000 in a cooltube??? I am used to growing in a room and am being forced to grow in a cab so I am trying to figure out what to do. Thanks


F1

 

[<>AXLE<>]

hello there sorry to get off your topic but had a question about cool tubes. I have a sun system 400 hps light is there a way to convert this to a cool tube setup, and where can I find items needed for a cool tube.

 

[Guest]

All you have to do is purchase a cooltube like this one and you use your existing ballast and bulb with it.

F1

 

[<>AXLE<>]

Thanks F1 for the link I think next grow I will upgrade to cool tube.

 

[guineapig]

Let's say that you have a cooltube set up in a small cabinet.....we have adequate fans pushing air in and out of the cooltube as well as an exhaust for the heat within the cabinet.....

So now you have removed the cooltube but you have left all the fans in place and have replaced the cooltube with a freestanding Gavita light and dewguard......

my question is: which of these 2 setups will get hotter? Conventional wisdom says the cooltube would be cooler but i have read posts that say the cooltube actually collects heat more than just a free-standing naked bulb......

anyone have any opinions......i am trying to figure out some preliminary details for my grow box......eventually some actual tests will be run and hard data will be collected but if any cabinet growers have advice which would lead me down a certain pathway i would love to hear it......

all responders get free love from my pet guineapig GP.....

 

[Guest]

interesting... well... i think...if you use a powerful fan... atleast 450 cfm centrifugal inline.. maybe more...and a cool tube not just venting the light...but pilling air from the room instead of getting a separate fan...well..i think that should work fine.

 

[Sinfuldreams]

Gavita Bulbs according to everything I'm finding on it, Keeps your Space Cooler.

Reflectors, Glass, and tubes collect and retain heat. All that heat is then dissipated into the Air of your Space. In Theory only the area NEAR the Gavita Bulb would be Extremely hot, in a Air Cooled set up the Glass, the Reflector and the Hood all retain heat from the Bulb. Idea behind the Gavtia is to let Air Cool the bulb, nothing to Hold Back any Lumens, and Circulating Air to keep things cool.

A 600 Watt HPS Gavtia and a Digital Ballast would be the way to fly.
Power consumption is far less with a Gavtia as no fans are needed to draw air out of a Tube or Hood.

Guy I know is using 2 Gavtia bulbs but it's in a Room not a Cabnet. He says it has lowered the air temps in his room. He thinks his Air Cooled Hood turned to an Oven, although much of the heat was fanned out, the Hood and glass it's self retained a lot of excess heat.

Sin

 

[Guest]

Hmmmmm.......Cooltubes are warm to the touch though arent they?? So I wouldnt think that they would put off that much heat....I think...Someone correct me if im wrong...

F1

 

[Sinfuldreams]

Hmmmmm.......Cooltubes are warm to the touch though arent they?? So I wouldnt think that they would put off that much heat....I think...Someone correct me if im wrong...

F1

The verdict is still out as far as Im concerned, One would think with fans pulling the Air out of a tube thats only WARM to the touch, would not create a lot of Heat. Also I would tend to think in a Cabnet you'd be better off with a tube, not much Air Volume in a Cabnet.

Sin

 

[guineapig]

thanks sinfuldreams you are the bomb......well F1 i think it would go like this- if those tubes are warm to the touch then they are still acting as a kind of "heat sink" and are storing heat within those thermoplastic molecules- the stored heat then goes outwards and begins to heat up the enclosed environment, especially a small cabinet like the one i am getting info on building.....so this is why i am leaning toward gavitas and a dew-guard, even though that dew-guard might also store heat within its metal molecules and act as a heat-sink......oh well......thanks for the info everybody....

GO TEAM IC.....together we can solve any technical problems......alike minds greatly thinking.....

if great minds think alike,
then do like minds think greatly?

gp

 

[Sinfuldreams]

guineapig
thanks for the complement
But those Gavtia Bulb are very hot!
If you have enough Air Circulation and Ventaltion the problem would be with Tops comming close to the Bulb. But a Cabnet is very different than a Room.
A Tube in a cabnet has it's benifits too. Sooooooooo


Sin

 

[mrwags]

BUT

BUT

Yes cabs are much different indeed. An inexpensive way to to use a Pyrex cooltube as well as a fan blowing over the tube and being sucked out by the OTHER exhaust fan. One fan for the tube and the other for the air and any extra heat. Kinda like this:






You can also FORCE cold air into the box with a simple 6inch hose a computer fan like this:





You will find that a 6 inch tube will more than double the incoming air as compared to a 4 inch. And you can take this one step further by going all out with filling the box with A/C'd air like this:





But this will be needed only in the Heat of summer.

My gallery has plenty of pics to show how to duplicate for a cost of about 35.00 and kept temps at below 80 degrees all summer long.






Mr.Wags

 

[ZagNut]

You will find that a 6 inch tube will more than double the incoming air as compared to a 4 inch. And you can take this one step further by going all out with filling the box with A/C'd air like this:





But this will be needed only in the Heat of summer.

My gallery has plenty of pics to show how to duplicate for a cost of about 35.00 and kept temps at below 80 degrees all summer long.

I love it! Can't wait 'till winter myself