Fairly small closet, 400 or 600W HPS? Need advice on cooling tube.

P

PhatDaddy

Member
I'm about to start a closet operation shortly, and wanted some input on the lights and exhaust.

The room I have to work with is about 5ft long, 19 inches wide, and a tad over 5ft tall. (60x19x62)

Now, I'm looking at lights, and have two options, 400W cool tube sHPS + MH, or a 600W equivalent.

Let me give you a few details on this closet to help you visualize my plan.

You open the door of this closet, and it goes in 10-15 inches both sides of the door both sides, and I have a metal bar for coats and stuff on top of the closet.

My idea was to make a fake wall, about 8-10 inches from the wall, to add ducting, air in and air out, and have that pushed / pulled out from a hole I'm going to make after removing the big baseboards.

Here are the fans I presently have.

1 Heavy duty Server fan (12V @ 2.5A), this fan weighs 5 pounds and the thrust from it is enough to make it float.

I also have a small air exchanger W. Hepa + Electric dust catcher (can unplug the electric dust catcher as I believe gives out Ozone and that's bad for plants..).

And for the cooling for the room this closet is going to reside (10x9 room), I have a 12,000 BTW portable AC.

This is a "extreme" quality, mspaint mockup of what I have in mind..
http://i.imgur.com/B8KCc.jpg

Green is obvious
Black is borders / Walls
The light is the yellow shining thing
Grey is ducting

Questions / Pondering:

How would I go and hook this up? My idea was to haul out the air through the cooling tube at an extremely high rate, and just leave the bottom air "In", as a plain, filtered vent, and just use the air exchanger to remove the heat and also to help remove the smell (filters to be added after it comes out of closet).

Should I add a fan for the air input? Or would the passive approach work?

Now, I know that it's less than optimal considering I'm pulling in and sucking out on the same side, but it would be getting sucked out from the top center of the room, and the fresh air would be sucked in by the extra vent from the bottom.

Ideas, suggestions, feedback? All appreciated.
 
acidbox420

acidbox420

Active Member
400 is more then enough IMO prolly over kill if 19 inches wide is your limit, unless you have a way to move the light back and forth while its on. The best way to cool the bulb is to have one line in and out just for the light, and then another intake for fresh air to plants. where do you plan to exhaust the heat from the light just back into the bigger AC cooled room? if so just know that a 400 does produce a good amount of heat. I had the same kind closet as you but sliding doors and the celling was taller, also had a good AC in the room with the closet but until i made a tent and sealed of some space the fans didnt do me justice.
 
P

PhatDaddy

Member
acidbox420 said:
400 is more then enough IMO prolly over kill if 19 inches wide is your limit, unless you have a way to move the light back and forth while its on. The best way to cool the bulb is to have one line in and out just for the light, and then another intake for fresh air to plants. where do you plan to exhaust the heat from the light just back into the bigger AC cooled room? if so just know that a 400 does produce a good amount of heat
Click to expand...
Yea, you're right, 400 is probably enough, there is barely any room for front back movement, only side to side.

The air from the light would be filtered and vented out with the AC exhaust using a splitter, I want to reduce the heat in the house as much as possible as our summers here are real hot and muggy (90-100% Humidity).

So you're saying I should have a fan pushing air into the unit from the chilled room, and not make it just a passive system created by the negative pressure? Makes sense..
 
acidbox420

acidbox420

Active Member
look at my grow in my sig there should be some pics of my closet grow my closet is deeper as well i think
 
familyguykush

familyguykush

Member
PhatDaddy said:
I'm about to start a closet operation shortly, and wanted some input on the lights and exhaust.

The room I have to work with is about 5ft long, 19 inches wide, and a tad over 5ft tall. (60x19x62)

Now, I'm looking at lights, and have two options, 400W cool tube sHPS + MH, or a 600W equivalent.

Let me give you a few details on this closet to help you visualize my plan.

You open the door of this closet, and it goes in 10-15 inches both sides of the door both sides, and I have a metal bar for coats and stuff on top of the closet.

My idea was to make a fake wall, about 8-10 inches from the wall, to add ducting, air in and air out, and have that pushed / pulled out from a hole I'm going to make after removing the big baseboards.

Here are the fans I presently have.

1 Heavy duty Server fan (12V @ 2.5A), this fan weighs 5 pounds and the thrust from it is enough to make it float.

I also have a small air exchanger W. Hepa + Electric dust catcher (can unplug the electric dust catcher as I believe gives out Ozone and that's bad for plants..).

And for the cooling for the room this closet is going to reside (10x9 room), I have a 12,000 BTW portable AC.

This is a "extreme" quality, mspaint mockup of what I have in mind..
http://i.imgur.com/B8KCc.jpg

Green is obvious
Black is borders / Walls
The light is the yellow shining thing
Grey is ducting

Questions / Pondering:

How would I go and hook this up? My idea was to haul out the air through the cooling tube at an extremely high rate, and just leave the bottom air "In", as a plain, filtered vent, and just use the air exchanger to remove the heat and also to help remove the smell (filters to be added after it comes out of closet).

Should I add a fan for the air input? Or would the passive approach work?

Now, I know that it's less than optimal considering I'm pulling in and sucking out on the same side, but it would be getting sucked out from the top center of the room, and the fresh air would be sucked in by the extra vent from the bottom.

Ideas, suggestions, feedback? All appreciated.
Click to expand...


get an air cooled hood not a cooltube cooltubes suck you cant clean the glass cleaning the glass is very important and they dont spread light as well and you should get a 400 to start with or a digital dimmable 600 if you got the money also i recommend getting a high temp shutoff it will save your crop you really need one if your running air cooled lights im running a 400 in a small space similar to yours
 

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