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Can filter vs ProFilter observation

Batboy

Member
For anyone out there running a Can 9000 filter, you may want to think about a change.

Can 9000 was the largest Can filter that I could fit into my cab (27 cubic feet). While it is long at 25", it is only 5.5" wide. Every size up in Can filters is a huge jump up in diameter, which really limited my space, and my relatively weak S&P-150 fan was not promised to work on anything bigger, so I needed the 9000 to work. As I have mentioned in other threads, the filter was only partially effective for me. One stanky LR#2 kicked the brand new filter's butt and even with less stinky strains, I always had to use supplemental odor controls. I played around a lot with fan speed, but I never found a point where the filter was good enough.

On the advice of a knowledgable salesman, I ditched the Can 9000 and went to a ProFilter (made by Vortex) Pro70. It is basically the same height as the Can (maybe a few inches longer when you factor in the flange) and it is several inches wider (but still slimmer than every Can larger than the 9000). This thing kicks butt!

Even when the 9000 was working to reduce most odor, the nearby rooms still had a "strange" smell that might not have been immediately identifiable as MJ, but you could tell that something vegitative/organic was going on in the house, other times you'd walk into a room and get a whiff. The ProFilter has completely shut down all odor. No longer is my nose constantly testing to see if I need to up the supplemental controls (ona, air fresheners, etc.). Some might argue that my S&P-150 fan is too small for this sized filter, but I can tell you that on the 'low' setting and using a Variac speed controller to slow it down even more, my S&P can cool a 400w cooltube AND pull through the Pro70 to completely eliminate the odor.

I am not trying to knock Can, I know many that swear by them, but I'd never even heard of ProFilter before and now I want to let people know that they are the real deal.
 
good to head as i have a can filter and with my fan it did completely eliminate my odor i am thinking of switching brands because i think that the Cans are not refillable, i am not sure but that is what i have read. when i bought it i was under the impression that i could refill it. i am gonna try but if not then i am going to buy a diff brand one that is refillable
 

GrilldCheese

New member
I have a can filter and it is riveted in, but rivets are easily enough drill out. Perhaps you can take out the rivets, get a thread tapping bit for your drill and replace with screws or bolts???
 

boroboro

Member
I battled stinkiness in my last grow, with a new CAN 33. I ended up concluding that I had been too sloppy in sealing the ductwork, reflector hood, and in sealing up the room.

Are you sure that the rest of your setup stayed the same, Batboy?
 

HUGE

Active member
Veteran
I just installed 1 of those new phresh filters made by sunlight supply. Have been lilin it soo far.
 

Mr. Bongjangles

Head Brewer
ICMag Donor
Veteran
Sorry, but these observations are useless.

Simply put, the can 9000 is a horrible match for a s&p150, which pulls 300-200 cfm depending on the settings.

The can 9000 is rated for 120 cfm if recirculating, and 55 cfm if used for exhaust. And generally, you want to have some breathing room, so perhaps 30-40 cfm would be safe to exhaust through that filter.

Even slowed down significantly, the s&p would be pulling much too hard for the can9000.

The filter you replaced it with, on the other hand, is rated at 400 cfm, which means about 200 cfm for exhaust.

So yeah, this was just correcting an improper choice of filter as I see it, and your comments about the can9000's effectiveness are pretty misleading because you were overdriving the filter like crazy.

In reading your post, it is clear you relied on someone else's word about the relative strength of that fan and the can filter. In the future, you should research the fan and filter choices beforehand, and be sure they are a good match.
 

FreezerBoy

Was blind but now IC Puckbunny in Training
Veteran
s&p150, which pulls 300-200 cfm depending on the settings...

The can 9000 is rated for 120 cfm...

D'oh! I hate it when that happens. Bojangles nailed it, pilot error. When the fans rating exceeds the filters, failure is the only option.
 

Batboy

Member
I battled stinkiness in my last grow, with a new CAN 33. I ended up concluding that I had been too sloppy in sealing the ductwork, reflector hood, and in sealing up the room.

Are you sure that the rest of your setup stayed the same, Batboy?

That's certainly valid and something I thought of. I disconnected and reconnected my 9000 several times and in different configurations (tape, flanges, etc.). No help. The pro filter worked right out of the gate. . .
 

Batboy

Member
Sorry, but these observations are useless.

Simply put, the can 9000 is a horrible match for a s&p150, which pulls 300-200 cfm depending on the settings.

The can 9000 is rated for 120 cfm if recirculating, and 55 cfm if used for exhaust. And generally, you want to have some breathing room, so perhaps 30-40 cfm would be safe to exhaust through that filter.

Even slowed down significantly, the s&p would be pulling much too hard for the can9000.

The filter you replaced it with, on the other hand, is rated at 400 cfm, which means about 200 cfm for exhaust.

So yeah, this was just correcting an improper choice of filter as I see it, and your comments about the can9000's effectiveness are pretty misleading because you were overdriving the filter like crazy.

In reading your post, it is clear you relied on someone else's word about the relative strength of that fan and the can filter. In the future, you should research the fan and filter choices beforehand, and be sure they are a good match.


Sorry but I disagree with your assessment, and you will just have to take me at my word when I say that I researched the hell out of the 9000/S&P-150 pairing.

I agree that the 9000 has max scrubbing at 120 cfm, but no way is the S&P-150 too much. On the low setting, the S&P can only pull 200 cfm at 0" static pressure. I'm sure you know that the filter adds considerable static pressure and that mixed vent fans such as the S&P absolutely turn to shit when faced with considerable static pressure. On the low setting, with anywhere from .375" and above of SP, the S&P is not pulling more than 120 cfm. Add to that the fact that I have a variac speed controller on the fan and went FAR below the cfms being pulled on the low setting, I am comfortable in saying that there is NO WAY that the fan was too much for the filter. I tested with that fan turned all the way down and barely moving any air; and that didn't work. Frankly, during my research, I saw more concern with my pairing due to the possibility that the S&P would be too WEAK once the static pressure kicked in.

Shoot man, at its strongest (on the low setting), when faced with .75" SP, the S&P is pulling 24 cfm. 24!
 

Mr. Bongjangles

Head Brewer
ICMag Donor
Veteran
Sorry but I disagree with your assessment, and you will just have to take me at my word when I say that I researched the hell out of the 9000/S&P-150 pairing.

I agree that the 9000 has max scrubbing at 120 cfm, but no way is the S&P-150 too much. On the low setting, the S&P can only pull 200 cfm at 0" static pressure. I'm sure you know that the filter adds considerable static pressure and that mixed vent fans such as the S&P absolutely turn to shit when faced with considerable static pressure. On the low setting, with anywhere from .375" and above of SP, the S&P is not pulling more than 120 cfm. Add to that the fact that I have a variac speed controller on the fan and went FAR below the cfms being pulled on the low setting, I am comfortable in saying that there is NO WAY that the fan was too much for the filter. I tested with that fan turned all the way down and barely moving any air; and that didn't work. Frankly, during my research, I saw more concern with my pairing due to the possibility that the S&P would be too WEAK once the static pressure kicked in.

Shoot man, at its strongest (on the low setting), when faced with .75" SP, the S&P is pulling 24 cfm. 24!

Go ahead and pretend your cab sized duct run is reducing the airflow from 200 to 24 cfm, but that sounds straight up ridiculous.

LOL - "YES WAY" that 200 cfm fan is way too much for a filter rated at 55 cfm.

http://www.canfilters.com/canfilters_9000.html

Notice how the only recommended fan that stays within the 55 cfm exhaust rate is a 4'' pc fan. Even for recirculating, they recommend a 114 cfm fan tops. Yours is 200-300 cfm, and you wanna keep crying about how sure you are?
 
Its all about contact time. The Can Filter brand has a formula for effectiveness. The stinky air must be in contact with the activated carbon for a minimum amount of time to remove odors. If the airflow is to great the air will move over the carbon to quickly and the odor will not be removed. I find it best to use a oversized filter when compared to the fan. I use a Can 75 with a Vortex 6" 440cfm slowed to about 75% in my 4'x4' Sun Hut. I started with a Can 33, then upgraded to a Can 50, and finally the Can 75. Good grass really smells. The more activated carbon the better.
 

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