vent and cooling 3x600w in tent?

[normlguy]

friends setup as of now. tent in finished basement. 6in carbonaire inside 4x8 tent> 6in vortex> 3x600w aircooled hoods>outside tent. 25 ft 6 in duct into reducer to 4in y with dryer vent outside house. he is now lighting up his second light, third light on soon. intake from room next door around 70 degrees with 2 6inch ducts four ft long. one with 180 cfm inline fan

temps got to 85 w second light, (76 with one light on) took off reducer and just exhausting into laundry room. temps now 83. is it possibe to cool 3 light without 2 fans or ac?

i cant exhaust outside unless using 4in dryer vent hole. or go 25 ft with 6 in duct horizontally then 20 ft up to attic. that seems pretty far.

ideas i have.

1. some size fan pushing thru sealed hoods out thru 4in dryer vent. this would be ALOT easier than going up into his attic. then a different fan on carbon filter, separate ducting of course.

2. expensive and pain in the ass ac

3.so it doesnt seem he can cool them w 6 in vortex and filter and 50ft of duct into attic. maybe with another fan pulling from attic?

so number 3 would be easier than 1 just because one duct system instead of one for lights and one for filter, BUT if 4in exhaust is enough for just the lights he would not need to run duct work thru 3 stories to attic, so maybe number one is better?

any ideas would be greatly appreciated, thanks

 

[zor]

2 fans would probably be the easiest way to cool. One for the lights and one for the tent. AC + CO2 adds alot of complexity and expensive gear.

 

[normlguy]

do you think a fan with a 4in exaust would be enough to cool the 3 600w?

he has the 6in vortex already. since he should now buy another do you thin a 4in would work for the lights since its only a 4in exhaust?

then maybe he can use the 6in for the filter.

or should he use the 6in for the lights (even though 4in exhaust)
he is trying to avoid ducting all the way to the attic. and use a 4in fan with a reducer on the 6in carbonaire?

thanks

 

[DRorganic]

http://www.discount-hydro.com/productdisp.php?pid=298&navid=29 check this out...

 

[Admiral Canna]

IMO, a 6" HO Can Fan would clean that tent of heat, even with 3 600 watters burning.

The reducing it down to 4" is killing you. 6" duct would be so much better.

I'd always try to make the ventilation system as top shelf as possible.....then you can scrap that AC that will add to yer juice bill. A fan is cheaper to run than an AC.

Hope you sort it out.

 

[David762]

Using something similar, but with 6" vent w/fan.

Using something similar, but with 6" vent w/fan.

do you think a fan with a 4in exaust would be enough to cool the 3 600w?

he has the 6in vortex already. since he should now buy another do you thin a 4in would work for the lights since its only a 4in exhaust?

then maybe he can use the 6in for the filter.

or should he use the 6in for the lights (even though 4in exhaust)
he is trying to avoid ducting all the way to the attic. and use a 4in fan with a reducer on the 6in carbonaire?

thanks

One 6" fan exclusively for the vented hoods, and one 6" fan for the grow room (small room). My lamps are 3 x 400 W, so you are looking at an additional 600 W worth of heat to remove. Something you might try is to insulate both of your vent ducts, inside and outside your grow room. Yes, it's a bit expensive, but less than putting in a split AC unit + electric bill. I would try venting to the attic AND insulating the ducts before going to AC.

 

[Sirus]

IMO, a 6" HO Can Fan would clean that tent of heat, even with 3 600 watters burning.

The reducing it down to 4" is killing you. 6" duct would be so much better.

I'd always try to make the ventilation system as top shelf as possible.....then you can scrap that AC that will add to yer juice bill. A fan is cheaper to run than an AC.

Hope you sort it out.

100% agree with the 6" over the 4" for ventilation...I have a DR100L 4x4x6 with 800W and I wish I would have opted for the 6" for both hood cooling and tent/filter ventilation. Good luck bro!

 

[Igrowweed]

I'd say fersure go with 2 fans. I'd do that if I was in your position.,

 

[normlguy]

since op he has bought another 6 in vortex. his stepup is like this now

6 in intake from outside > 15ft of insulated duct > 6in vortex > 5 ft insulated duct into tent > 3 600 > 20 ft insul duct to outside.

can filter with 6in vortex inside tent with 2 6 in intake from adjacent room. blowing outside tent. but that takes the ambient temp the room the tent is in up to 78. so he said he might hook it up with a y to the exaust from the light to the outside.

his temps are 70 night 81 at the highest in day.

he live north west w cold winters. he said it has gotten cold at night and noticed a bunch condensation on vortex pushing thru the light w outside air.

so he said he is gonna have to intake from another room. but he said he is worried about having 2 different 6in vortex pushing outside because of all negative pressure.