suck or blow?

[ThePotanist]

Ok so all my stuffs coming together geting all my mateiral ready for a nice personal grow and i got my filter too but Im not sure is it better to suck or blow. the question more is it better to have my fan pulling the air through the filter from within my box or would it better to have my fan on blowing air from in the box to the filter then out the filter like.

 

[Pig-Pen]

suck or blow?

I'm good with either.

But really, it's generally regarded that it's better to have the filter on the room, fan pulling through it. As far as having the fan push through the filter, I think the difference is negligible if existent, so whichever works best for your setup is the way to go if you ask me, which you did, though not me specifically.

Next time, ask "Push or Pull?"

 

[trich-zilla]

suck...

haha

 

[Headless Hornet]

Ok so all my stuffs coming together geting all my mateiral ready for a nice personal grow and i got my filter too but Im not sure is it better to suck or blow. the question more is it better to have my fan pulling the air through the filter from within my box or would it better to have my fan on blowing air from in the box to the filter then out the filter like.

Although I couldn't decifer your tiny picture, I'd have to say that a good suck is always preferred. As you put it "to have my fan pulling the air through the filter from within my box"

I.e. air moves into box though a passive intake near bottom. Your active exhaust is at top of cab. Air enters box, then enters filter, then enters fan, then is exhausted.

My Hornet's Nest

 

[alk_loid]

Circular duct fans for example, are propulsive, pushing the air. And should be installed so that the long duct is after the fan itself.

push not pull

 

[Microwido]

push not pull

This is incorrect. The correct answer is pulling air through the filter is always better than pushing.

So the answer is Suck.

Please don't respond if you don't know what the hell your talking about, thanks.

 

[jdubz206]

i just got denied both from my girl...

 

[darrinjefferson]

suck...

 

[alk_loid]

This is incorrect. The correct answer is pulling air through the filter is always better than pushing.

So the answer is Suck.

Please don't respond if you don't know what the hell your talking about, thanks.

lol i quoted the old OG grow faq. cant get more accurate .

feel the fan. it blows more than it sucks. simple

 

[Albert Hofmann]

lol i quoted the old OG grow faq. cant get more accurate .

feel the fan. it blows more than it sucks. simple

I assure you that a fan does NOT blow more than it sucks...if you think about that for a second you should get it....a fan blow EXACTLY as much as it sucks . OG faq or not, the correct answere is suck. Extraction fans should always be as close to the exhaust point as possible.

 

[trich-zilla]

This is incorrect. The correct answer is pulling air through the filter is always better than pushing.

So the answer is Suck.

Please don't respond if you don't know what the hell your talking about, thanks.

owned!

 

[Floro Joe]

Yeah,suck it.

 

[HempKat]

I assure you that a fan does NOT blow more than it sucks...if you think about that for a second you should get it....a fan blow EXACTLY as much as it sucks . OG faq or not, the correct answere is suck. Extraction fans should always be as close to the exhaust point as possible.

Yeah but if your scrubber is for example in another room attached to the exhaust vent and the fan sucking the air thru the vent and blowing it into the scrubber then the fan would be nearest to the exhaust point.

Also you all are missing something in what the OG FAQ is saying, it's talking about a specific type of fan, an inline fan. It's saying for that specific type of fan pushing is better. Inline fans are designed to help increase the efficiency of an exhaust system by providing an extra bit of push thru the ducting when you get far from the actual furnace.

You can't have one hard fast rule for all fans because all fans are not created equal. Also in a situation like Alk's (he's growing in a fairly confined cabinet) to have the scrubber in the cab would eat up valuable head space so if he did have it in the cab the scrubber would have to be on the ground and if it was sucking the air from the ground thru the scrubber you would be exhausting more of your cool air then you would be of the hot air since heat rises.

 

[donatello22]

right now i have my fan pushing air through my hood...through the ducting and out of the box...just because I was lazy and it was close to the powerbar. I might rerig it to have the fan at the end of the duct pulling instead but I dont think it matters for a computer fan as long as the seal is good throughout.

 

[SlowCalaToker]

Pushing against all that airspace constriction (through my hood...through the ducting and out of the box) would impede the airflow away from the fan blades, reducing the overall efficiency of the fan and speed of the fan blades.

Suck is always preferable to blow, except in certain specific applications (such as the afformentioned inline duct fans.)

 

[Albert Hofmann]

Yeah but if your scrubber is for example in another room attached to the exhaust vent and the fan sucking the air thru the vent and blowing it into the scrubber then the fan would be nearest to the exhaust point.

Also you all are missing something in what the OG FAQ is saying, it's talking about a specific type of fan, an inline fan. It's saying for that specific type of fan pushing is better. Inline fans are designed to help increase the efficiency of an exhaust system by providing an extra bit of push thru the ducting when you get far from the actual furnace.

You can't have one hard fast rule for all fans because all fans are not created equal. Also in a situation like Alk's (he's growing in a fairly confined cabinet) to have the scrubber in the cab would eat up valuable head space so if he did have it in the cab the scrubber would have to be on the ground and if it was sucking the air from the ground thru the scrubber you would be exhausting more of your cool air then you would be of the hot air since heat rises.

I appreciate someone of your stature popping into the thread Hemkat. You must be referring to and in duct booster fan because a vortex, elicent, hurricane, etc is most efficient when pulling air through a system and the exhausting it a short distance. It is simply impractical to have a blower in every room in the house extracting air from the furnace. So the practical solution was 1 large blower, blowing air throughout the house. However, due to the inefficiency of this system in duct fans were invented.
You are absolutely correct about not having one hard and fast rule, as every situation is different. But that was not the question that was asked. The question asked is what is the BEST method, I answereed that question. Everyone has to adjust the best possible methods to work for them. There is a better way to heat/cool a house but the most prctical is the one that is often used.

 

[Guest]

With all due respect, do you want a BJ (blowing air) or your lady administering a vacuum?. As in sucking?.

TyStik

 

[Merfolk]

 

[HempKat]

I appreciate someone of your stature popping into the thread Hemkat. You must be referring to and in duct booster fan because a vortex, elicent, hurricane, etc is most efficient when pulling air through a system and the exhausting it a short distance. It is simply impractical to have a blower in every room in the house extracting air from the furnace. So the practical solution was 1 large blower, blowing air throughout the house. However, due to the inefficiency of this system in duct fans were invented.
You are absolutely correct about not having one hard and fast rule, as every situation is different. But that was not the question that was asked. The question asked is what is the BEST method, I answereed that question. Everyone has to adjust the best possible methods to work for them. There is a better way to heat/cool a house but the most prctical is the one that is often used.

My stature? Hey I'm just another grower, just like the rest of you all. Yeah I was referencing an in duct booster fan as I believe that is what the growfaq seemed to be referencing and it is my understanding that is what the person who offered the growfaq reference is using. We had just gone thru that in a help thread I maintain. I think that's why he offered his opinion and the growfaq reference with such confidence. It bothered me that his suggestion was greeted with such a negative response. The idea that someone would feel someone got pwned in offering help is irritating to me. Knowing that Alk probably didn't know how to clarify his statement (since this is somewhat new to him) I felt it necessary to set the record straight and point out there is no one right answer.

Yes you are absolutely correct, for vortex, elicent, hurricane and some other types of fans, having it suck the air thru rather then blow thru, is the most efficient.

 

[Albert Hofmann]

My stature? Hey I'm just another grower, just like the rest of you all. Yeah I was referencing an in duct booster fan as I believe that is what the growfaq seemed to be referencing and it is my understanding that is what the person who offered the growfaq reference is using. We had just gone thru that in a help thread I maintain. I think that's why he offered his opinion and the growfaq reference with such confidence. It bothered me that his suggestion was greeted with such a negative response. The idea that someone would feel someone got pwned in offering help is irritating to me. Knowing that Alk probably didn't know how to clarify his statement (since this is somewhat new to him) I felt it necessary to set the record straight and point out there is no one right answer.

Well, upon rereading my original post, I believe I may have been a bit abrasive in my response...I apologize alk_loid. I just want the best most accurate info available to help new growers. I'm new to the whole online community and I will be working on my manners