Gravity_Loss

This is my setup.



Tent: 2 x 4 x 5.5
Exhaust: 170 cfm HTG brand inline through 4in ducting
Intake: 12in desk fan blowing through intake slat
Circulation: 10in desk fan pointed at plants
Light: 400watt Sunmaster Warm Deuxe
Hood: HTG 6in Eurocool vented hood

As is, I'm getting temperatures averaging 74*-81* during the day which I don't have a problem with but my hydro reservoir in the tent has been climbing to the mid 70's during the mid day. I would like to drop the average temp 5*-8* so I won't have to worry so much about my water temps. I could use some suggestions so here is a little more info on my limitations.

1) I'm not on a super tight budget but running out and spending a few hundred dollars isn't all that possible for me right now. I would prefer not to dish out a bunch on this one.

2) My apartment doesn't have AC so the ambient temps in the room get a little warm. I try to keep the window open as much as possible but summer is coming soon and this is my first summer here in coastal Washington.

3) I'm probably not going to be using a carbon filter. The stress on the fan isn't worth it when battling temps so I'll probably be using ONA gel for odor control.

4) I can't upgrade to a 6in fan. The holes in the tent are 4in and I'm not willing to cut the fabric.

5) I can't take my reservoirs out of the tent. I'm doing a 2 tub 14 gallon DWC. I'm brainstorming a low to the ground aeroponics system with a remote reservoir but that won't see daylight until next harvest.

I've played with a few ideas already. The cheaper ideas would be ideal, but I don't know if they would work or not. A cheap fix that doesn't work is a waste.

A) Fit 6in computer fans to the hood, use the inline fan to just vent the tent. Would cost about $30 but I don't know if it would work.

B) Install a 4in duct booster fan at the end of my duct work. $15-20 for a cheap booster fan. I was under the impression that these are more for assisting air through long straight sections of pipe, not assisting with suction in a small area. http://www.htgsupply.com/Product-4in...e-Duct-Fan.asp

C) Buy a portable air conditioner for the room. I can't buy a window unit because I have sideways sliding windows. The cheap AC units that use water circulation are out of the question. They are a pain. The cheapest decent portable AC runs $300+. This is my last resort.

__________________
Genesis 1:29
And God said, “See, I have given you every herb that yields seed which is on the face of all the Earth, and every tree whose fruit yields seed; to you it shall be for food.”

Reason is the mind's awarness of itself. --- Zen ..)

Gravity_Loss

30 views and no opinions?

__________________
Genesis 1:29
And God said, “See, I have given you every herb that yields seed which is on the face of all the Earth, and every tree whose fruit yields seed; to you it shall be for food.”

Reason is the mind's awarness of itself. --- Zen ..)

SmokeaJoint

I'm sorry man, but it really does seem like your options are limited. One cheapish solution could be to invest in another inline fan to cool the room your set up in. Craigslist is your friend. Similarly, look around for a cheap window AC unit. Outside of that, oscillating stand fan?

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Gravity_Loss

My ambient room temps aren't THAT bad. It usually stays around 75 in there but the tent is naturally a few degrees hotter. I would rather improve the efficiency of my ventilation than have to lower the temperature of the grow room (just so happens to be my bedroom).

__________________
Genesis 1:29
And God said, “See, I have given you every herb that yields seed which is on the face of all the Earth, and every tree whose fruit yields seed; to you it shall be for food.”

Reason is the mind's awarness of itself. --- Zen ..)

farmergiles

You could have the lights on during the night- simple but effective.

You could move the res out of the tent though IDK what system you have; this option may be impracticable.

You could make a water cooler using a coil of copper pipe in the res with cold water flowing through it with a valve controlled by a thermometer in the res.

There's 3 ideas, the 1st is pretty easy.

Or buy a bigger fan. Or buy a small intake fan. And/or straighten out the route of the ducting- bends cause air resistance.

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Gravity_Loss

I'll try running the light at night. Didn't think of that. Even with the ducting laid out straight it doesn't make a huge difference.

__________________
Genesis 1:29
And God said, “See, I have given you every herb that yields seed which is on the face of all the Earth, and every tree whose fruit yields seed; to you it shall be for food.”

Reason is the mind's awarness of itself. --- Zen ..)

Captain Cannabis

i would try passive intakes and changing the light schedule. you will get better temp control if you have negative pressure and passive vents near the floor.

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Gravity_Loss

I have taken my intake fan away and it has caused my temps to go up a little bit. Even with the intake, that inline fan was causing pretty decent negative pressure.

I'll be flowering in 2 weeks and I'll invert my light schedule then. I imagine that will deal with the temp problems.

__________________
Genesis 1:29
And God said, “See, I have given you every herb that yields seed which is on the face of all the Earth, and every tree whose fruit yields seed; to you it shall be for food.”

Reason is the mind's awarness of itself. --- Zen ..)

abraxas

Why don't you want to enlarge the tent holes to six inch?