Having trouble exhausting heat with 265cfm

[rainAgI4]

Designing a new room, I have two 150 watt HPS lights in a area that is:

4 Feet Height, 4 Feet Width, 6 Feet Length

I have a Dayton Exhaust Fan 265cfm on one end that is exhausting air out through a carbon filter however it is not strong enough.

With both 150 watt lights I am pushing 85 degrees, and reaching 90 on a warm day. With one light on it is perfect at 70 to 75.

I need a exhaust fan that is strong enough to exhaust most of the hot air out of the area, I am considering a 465 cfm but I am worried that won't be strong enough... I do not have a cool tube so it needs to be pretty powerful I am guessing

Anyone help me on this 1?

 

[marx2k]

Are the lights in an aircooled hood or what? I would imagine 265cfm would be fine for two 150W HPS

Why not use a cooltube setup? You can do a Y connection via ducting from the two cooltubes directly to the exhaust fan. You can buy 2 6" cooltubes with internal reflectors for half the price of a 6" vortex which is what youre describing as far as 465cfm output.

I think cooltubes are your answer

 

[rainAgI4]

I agree however they are 150 watt security lights... How would I make this work on a cool tube?

They are not a air cooled hood, its a security light, made for outdoor use.

 

[Maj.PotHead]

MJ is spot on but heres the icmag dyi linkorama http://www.icmag.com/ic/showthread.php?t=40637 lotsa info there

 

[rainAgI4]

Right well it's an attic area, and I have a "room" made in the attic. The room I made just has tarp walls that are nailed up.

One end of the tarp has a hole in it with duct hose running to the exhaust fan, Dayton 265.

Other end just has a opening with a fan infront of it, guess you could call it my intake.

I'd really prefer to use converting my lights as a last resort, because in my honest oppinion that seems dangerous... even though I am sure it's fine I'd rather let the professionals assemble my lights ty.

BGHydro is telling me I need to replace my Dayton 265 fan with a Vortex 4" fan, and they said to use my dayton for intake. They said the vortex would exhaust a lot better, is this true.?

 

[rainAgI4]

John i dont get what your trying to say... Yes i only have 300 watts but obviously this 300 watts is making it too hot, so whats your point?

I never said remote ballasting wouldn't work, just that I'd like to try an other method first...

If there are better ways to cool my area please tell me? That's what I made this thread for, so others can tell me what works...
If your just going to say there's better ways that isn't going to help me at all...

My plan right now is to replace my Dayton 265 with a Vortex 4" and use the Vortex for exhaust. BGHydro says the inline/vortex fans work better when attached to something like a filter because it causes static pressure. They said the dayton would be better if there was no filter.

So I am planning on using the Dayton to intake from a outside room, and use the Vortex as my exhaust.

I will not remote ballast or cool tube my 150 watt security lights yet

The hydro store has a 30 day return policy if it doesn't work as I need it to

 

[rainAgI4]

I understand what your saying, I will look into remote ballasting and a cool tube then.

But I still need proper ventilation... i mean just because I don't have heat issues doesn't mean you don't need ventilation, you still need a good intake and exhaust so I may still get this fan.

And just so you know, there's also a lot of people who don't convert their security lights.

Just relax a bit bro... I wasn't avoiding your suggestion because I thought it wouldn't work, I just wanted to see if there was an alternative before fucking with electrical......

 

[rainAgI4]

Right, well im not good at electrical stuff... I will have my "handyman" take a look at the guide and see what he thinks.

I will be trying the intake fan and switching the exhaust to inline, see if it helps

 

[HIDEyourBUD]

You must take your carbon filter into consideration. That blower should work fine even without the cool tube. Maybe your carbon filter does not provide enough volume or is just plain bad and won't let air through. If you upgrade your fan, you may run into a stink problem as an undersized filter will not scrub the high pressure/high volume air as well.

 

[NiteTiger]

If you're exhausting your heat right back into the area you're drawing your intake air from, no amount of CFMs is going to cool your grow.

Being in an attic, I'd say your ambient air temps are probably high to begin with, so the first thing I would focus on is getting your ambient air temps down where ever the intake is pulling from.

 

[rainAgI4]

Yeah I know the ventilation at the moment is kind of ghetto, I had a feeling my tarp wall wasn't going to do a very good job...lol

I can have my intake coming from another room though, that is not a problem.

I agree, I think my carbon filter is a little cheap, the amount of air the fan is exhausting and the amount coming out the filter does not seem equal.

I am considering a roof vent and just saying fuck the filter, cuz if it's going straight out the roof into the air who is going to smell it? And who would smell my little grow anyways..lol, its not like its big

 

[marx2k]

Even if it's going out the roof, you would be REALLY surprised at how smelly it can be. Example: Ever drive by a Burger King?

 

[rainAgI4]

Right but i will have 8 plants no taller than 24 inches... no more yield than 8 oz

Burger king grills 8 oz of burgers in 10 minutes lol

I guess I could exhaust through a carbon filter into a secluded area, then have the air from the secluded area vent through the roof vent to outside.

 

[hogwild]

ive got the same exact grow dimensions as you and i run 1000 watts, soon to be 2 600 watt digi's, I would never be able to cool a damn thing if it werent for cool tubes. With the cool tubes all i need is a small 4 inch inline fan to get fresh air in, without the cool tubes growing is not an option for me at least.

 

[NiteTiger]

Right but i will have 8 plants no taller than 24 inches... no more yield than 8 oz

Burger king grills 8 oz of burgers in 10 minutes lol

I guess I could exhaust through a carbon filter into a secluded area, then have the air from the secluded area vent through the roof vent to outside.

Excellent idea.

Never, ever, ever, EVER skimp on odor control. Get something proven effective in place. All it would take is one freak inversion layer for all your neighbors to know you're growing pot.

 

[Maj.PotHead]

If you're exhausting your heat right back into the area you're drawing your intake air from, no amount of CFMs is going to cool your grow.

Being in an attic, I'd say your ambient air temps are probably high to begin with, so the first thing I would focus on is getting your ambient air temps down where ever the intake is pulling from.

now after hearing his grow is attic grow another spot on this grower maybeable to obtain thermostatic conrolled attic fans. these hook upto the shit cant remeber the proper name but where oh yea attic vents lol. if you lkive in a cooler climate tis might work and solve your heat problems, but where i live i dont even think attic grow is even possible during winter and for sure not summer 115+ day time temps