Heat Issues Secret Jardin Tent

I have the DS60, 2x2x4'6", 150w HPS with a 400CFM fan temps are hanging around 80*-83* with passive vent opening.
In theory the 400cfm should be over kill, not sure what the issue is.

Any help appreciated.

A: You can run c02 and take advantage of the higher temps.
B: Unhook one end of the hood so that the fan draws air through the tent, through the hood, and then outside. ( I am unsure as to your current setup but if the light vent is isolated from the tent try what I describe)

The problem with foil reflective walls is what it does to the light energy. When light passes through or reflects off something it's wavelengths can be altered and the light intensities shifted. Foil tends to reflect infrared very well and that heat radiation is bounced back into the tent instead of being absorbed by the wall raising your ambient temperatures.

What is your ambient temp? Where do you exhaust to?

I have the same tent. With a PG180 LED panel and a 150w CMH, I was around 84-86F with a 72-75F ambient and exhaust to the outside. I only use a 130 CFM fan going through a carbon filter.

Do you have both lower vents open? Are you venting out of the top?

brotherjericho said:

What is your ambient temp? Where do you exhaust to?

I have the same tent. With a PG180 LED panel and a 150w CMH, I was around 84-86F with a 72-75F ambient and exhaust to the outside. I only use a 130 CFM fan going through a carbon filter.

Do you have both lower vents open? Are you venting out of the top?

Click to expand...

Ambient temp is running 75-78. Passive velcro vent is closed other is open.exhaust vents out of the top. my light is 150w with enclosed ballast

Opm said:

A: You can run c02 and take advantage of the higher temps.
B: Unhook one end of the hood so that the fan draws air through the tent, through the hood, and then outside. ( I am unsure as to your current setup but if the light vent is isolated from the tent try what I describe)

The problem with foil reflective walls is what it does to the light energy. When light passes through or reflects off something it's wavelengths can be altered and the light intensities shifted. Foil tends to reflect infrared very well and that heat radiation is bounced back into the tent instead of being absorbed by the wall raising your ambient temperatures.

Click to expand...

this is http://www.lightbulbsurplus.com/index.php?main_page=product_info&products_id=123&cPath=18&gclid=CMettcHJ3rECFQmFnQod3DIAjQ#googlebase my lamp.

partial said:

Ambient temp is running 75-78. Passive velcro vent is closed other is open.exhaust vents out of the top. my light is 150w with enclosed ballast

Click to expand...

Where are you sending your exhaust once it leaves the tent?

Since you have a 400 cfm fan, you really should have both passive vents open.

brotherjericho said:

Where are you sending your exhaust once it leaves the tent?

Since you have a 400 cfm fan, you really should have both passive vents open.

Click to expand...

It is exhausting back into the room for now, i have a speedster with the fan so im trying not to run it full speed but i havn't had a choice. ill open the other passive vent and see what happens.

Put frozen milk gallon (filled with water not milk please!) or pop bottles either in/near the intake or in/near the output. If you are venting into the room you are drawing from, you effectively have 0 cold air intake = big no no for "cooling" you need a heat sink in absence of CAI. Hell even the fan itself is heating the air. Knowing the secret Jardin, you could maybe prop the frozen containers outside of the velcro vents and open both if it wont compromise light, if it is a concern you could duct tape trashbags over the frozens so you get a kind of a flared vent that cools, just put tubs under the frozens and switch every day or two.
hope that helps
mpp

partial said:

It is exhausting back into the room for now, i have a speedster with the fan so im trying not to run it full speed but i havn't had a choice. ill open the other passive vent and see what happens.

Click to expand...

The best thing you can do for your temps is find a way to move that exhaust out of the grow room. You're just recycling your air at this point so you'll not get a good handle on temps until you find a different place to exhaust.

brotherjericho said:

The best thing you can do for your temps is find a way to move that exhaust out of the grow room. You're just recycling your air at this point so you'll not get a good handle on temps until you find a different place to exhaust.

Click to expand...

What he said ^^^^

thanks for the input, my real problem is that this set up is suppose to go in a closet in my spare bedroom, now its just in the room with the exhaust venting out back into the room, so once its in the closet i'll have to find another way to vent the exhaust.