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Discussion in 'First-Time Cannabis Growers' started by nootherway, Mar 16, 2007.

  1. #1 nootherway, Mar 16, 2007
    I am currently purchasing all the components for a grow closet and I am having much difficulty deciding on which type of fan to use.....Ive noticed that in some of the high end "stealth" closets they used the computer fans, and on some they use the inline duct fans.....i was wondering if the computer fans with the 200 cfm ratings were as good as the in line duct fans with similar or a lower cfm rating.....and just for clarity the computer fan im looking at is on ebay with an attatched filter for 70 bucks plus shipping.......as far as my grow space i will be building it myself to optimize my stealth options and decrease my need to cut holes in floors and ceilings that are not mine......any input would be much appreciated
     
  2. #2 420Grower420, Mar 16, 2007
    70 bucks for a computer fan and filter is way too much, do some searching and you can save a bunch of money on this project.
     
  3. #3 nootherway, Mar 16, 2007
    I know i can make it myself my question is wheter or not the computer fan is an effective means of ventilation or should i get the larger inline duct fan?
     
  4. #4 chimera, Mar 16, 2007
    Get the bigger fan, I dude here thought he could cut corners with a smaller one and couldn't control his temps, ended up buying an inline. You do the math, buy 1 and have it not be sufficient and have to buy a second one or doing it right the first time.
     
  5. #5 toastybiz, Mar 16, 2007
    The effectiveness of fans depends on more than just cfm ratings. I don't really understand much about it, but there is the concept of static pressure, which has to do with how well the fan can draw and push and is particularly important when talking about putting a filter in the airflow. I think a computer fan will not work well with a filter, an inline duct fan would be better.

    The best bang for your buck by far, if you can rig it up, is the Stanley blower, rated at over 1,200 cfm on low and over 2,000 cfm on high and only about $40 at Wally World.
     
  6. #6 mrtwomuchskill, Mar 17, 2007
    Listen to the Og's of growing the two above me^^ they might not havy fancy pics but they know what there talking about. As for ventilation that is the most important factor you could have the best hydro system, seeds,lights and nutes you name it but if they cant breath you might as well give all your money to a stick up kid.

    Ventilation also plays a huge role in odor control so get it right my nigg
     
  7. #7 Baka Gaijin, Mar 17, 2007
    If you go big from the beginning, you can always crank it down later with a speed controller. For noise considerations, for instance. Or power savings. Or if all the carbon in your filter exits in one big PUFF. If that happens, post pictures for us!

    If you go small, there's no real safe way to crank a fan up higher. Well, if you try hard enough, there's a way - post pictures of the smoldering hulk of your fan if that happens.

    On that topic, I think (but am not sure) that speed controllers only work on inline duct fans, however. There's a whole DC-motor issue versus inductive motor thing I haven't torn apart enough fans to figure out yet.
     
  8. #8 DrBudGreengenes, Mar 17, 2007
    BG^^^ is right go BIG ....you can turn any fan down ....just wire in a Light Dimmer switch on yer' power cord....this will allow for far better control over air flow and noise.....you are gonna run a recirculating air system in a closed room? Are ya' gonna run AC in there and CO2?
     
  9. #9 Rumpleforeskin, Mar 17, 2007
    A PC-fan will not pump air through ducting. If you don't have to push air through ducts, then you can go by the CFM ratings alone.
     

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