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Old 02-12-2019, 11:53 AM #1
djibra
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6 inch hood on a 4 inch fan

hi fam,

so did anyone used/cooled a 6 inch reflector with a 4 inch fan? i dont find many quality hoods in 4 inch so im looking at bigger ones..but i have a new 4inch fan and i dont want do make extra investments so can you help me out on this one

hope i was clear with my english

cheers
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Old 02-12-2019, 12:57 PM #2
GodspeedGrows
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you can, youll just get the cfm of a 4" instead of the cfm of a 6"
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Old 02-12-2019, 01:00 PM #3
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Quote:
Originally Posted by djibra View Post
hi fam,

so did anyone used/cooled a 6 inch reflector with a 4 inch fan? i dont find many quality hoods in 4 inch so im looking at bigger ones..but i have a new 4inch fan and i dont want do make extra investments so can you help me out on this one

hope i was clear with my english

cheers


I'm gonna use a 4in vortex to cool one 1000watter, with a 6in air cooled hood. I hooked it up and it'll work......yes a 6in would be better fitting and cool multiple hoods. But I got this 4in vortex almost brand new for less than 25$ including shipping. If it wasn't for such a good deal I'd probably have bought a 6in fan for 6in reflector. I use a 8in Hydrofarm (big green( to circulate airflow in my growing area. I'd probably go with a 6in fan unless you already got a 4in.
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Old 02-12-2019, 02:57 PM #4
its.always.420
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Quote:
Originally Posted by wvkindbud38 View Post
I'd probably go with a 6in fan unless you already got a 4in.
He already has a brand new 4" fan. Stated in OP.

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Originally Posted by djibra View Post
hi fam,

so did anyone used/cooled a 6 inch reflector with a 4 inch fan? i dont find many quality hoods in 4 inch so im looking at bigger ones..but i have a new 4inch fan and i dont want do make extra investments so can you help me out on this one

hope i was clear with my english

cheers
I've done it (with 1000hps) and it worked just fine, although only up to 70 degrees ambient temps. Had to switch out to a 6" for summer. I would only use one 4-6" adapter and pull air through the hood, with the intake side being 6" and the outflow 4".
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Old 02-12-2019, 04:34 PM #5
wvkindbud38
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Originally Posted by its.always.420 View Post
He already has a brand new 4" fan. Stated in OP.


I've done it (with 1000hps) and it worked just fine, although only up to 70 degrees ambient temps. Had to switch out to a 6" for summer. I would only use one 4-6" adapter and pull air through the hood, with the intake side being 6" and the outflow 4".

I mint in general I wouldn't buy a 4in to go on 6in reflector. I used to use a 6in Vortex on 4 separate hoods....1000, 600, 430, 400 and that fan cooled 4 different styles of sunlight supply hoods, I kept plants pretty close to those hoods. Like I said Im using a 4in fan on 6in reflector....yes It works but if I was gonna buy new I'd go with 6in fan......in general.....yea I get he has a new 4in. Maybe that's a little more understanding lol
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Old 02-12-2019, 05:49 PM #6
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It's quite possible that an uncomplicated job such as this will see more airflow with a 4" than a more complex 6" install would.

There are many variables. Just one is the fact that most fan sizes are available in high and low power versions. Often, a high powered 4, uses the motor of a low powered 6. And will in fact shift more air once the going gets tough.

Perhaps a 4" fan outside the tent, can couple directly to a 6" duct, that does a line of sight dash through the tent wall, the light, and back out again into the same room. Leaving a second fan on carbon filter duties. So the extract fan is concerned with smell and humidity, while the lighting fan is a separate circuit.
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Old 02-12-2019, 06:20 PM #7
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Originally Posted by f-e View Post
It's quite possible that an uncomplicated job such as this will see more airflow with a 4" than a more complex 6" install would.

There are many variables. Just one is the fact that most fan sizes are available in high and low power versions. Often, a high powered 4, uses the motor of a low powered 6. And will in fact shift more air once the going gets tough.

Perhaps a 4" fan outside the tent, can couple directly to a 6" duct, that does a line of sight dash through the tent wall, the light, and back out again into the same room. Leaving a second fan on carbon filter duties. So the extract fan is concerned with smell and humidity, while the lighting fan is a separate circuit.
this is exactly the way i done mine today temp in tent is sitting at 24.5c to25c with 600watts.which is great it was 28c this morning without
the new reflector
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Old 02-22-2019, 12:13 AM #8
djibra
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Originally Posted by wvkindbud38 View Post
I'm gonna use a 4in vortex to cool one 1000watter, with a 6in air cooled hood. I hooked it up and it'll work......yes a 6in would be better fitting and cool multiple hoods. But I got this 4in vortex almost brand new for less than 25$ including shipping. If it wasn't for such a good deal I'd probably have bought a 6in fan for 6in reflector. I use a 8in Hydrofarm (big green( to circulate airflow in my growing area. I'd probably go with a 6in fan unless you already got a 4in.
cool..thanks for stopping by and sharing your experience means a lot..and yeah..i all ready have 4in fan
..although i would like to buy a 6in but i think its too strong for my 4x4 tent?! what do you think?

Quote:
Originally Posted by wvkindbud38 View Post
I mint in general I wouldn't buy a 4in to go on 6in reflector. I used to use a 6in Vortex on 4 separate hoods....1000, 600, 430, 400 and that fan cooled 4 different styles of sunlight supply hoods, I kept plants pretty close to those hoods. Like I said Im using a 4in fan on 6in reflector....yes It works but if I was gonna buy new I'd go with 6in fan......in general.....yea I get he has a new 4in. Maybe that's a little more understanding lol
especially if it has speed controller incorporated aka.temperature control and that why i like it but like i said..i have a 4x4 tent


im using 600w hps but my 4in prima klima cool tube is just too small footprint...so thats why i would like to upgrade for a better hood

cheers
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