Ventilation Duct Fan For COOLTUBE Question

[faithlessxxx]

I'm hoping to use it to make a cooltube for a 400w HPS, alternatively a 250HPS.
Will this do?

These are the specs:
TD 160/100.
2 speed: 2500/2100 v/min.
Effect 35/23 W.
Decibel 39/35 dB(A).
Max. air: 160 m³/tim.

Pic:

: Duct Fan

faithlessxxx Reviewed by faithlessxxx on 01-20-2007. Ventilation Duct Fan For COOLTUBE Question I'm hoping to use it to make a cooltube for a 400w HPS, alternatively a 250HPS. Will this do? These are the specs: TD 160/100. 2 speed: 2500/2100 v/min. Effect 35/23 W. Decibel 39/35 dB(A). Max. air: 160 m³/tim. Rating: 5

[GaGrown]

The opening on either end of the cool tube is 6 or 8 inch.If your asking what type of flex to use you can just use the 6 or 8 inch flex.I would put a 6x4 reducer on the ends and use the smaller fan.I hope I understood you correctly.

Ga Grown!

[faithlessxxx]

No, I mean if the fan is powerful enough. The cool tubes are around 9cm, but they're not a standard size since thwey come from second hand hurricane lamps, so will have to insulate a bit where they join the flex and fan.

Max. air: 160 m³/h.

[Zandor]

There are 2 FAQ's on making a cool tube have you checked it out yet?

http://boards.cannabis.com/grow-faqs...cool-tube.html

http://boards.cannabis.com/grow-faqs...cool-tube.html

[faithlessxxx]

Oh yeah, Ive checked them. technical specs make my head dizzy though...
Btw, I just finished banging an exhaust hole in my wall. Quick spliff break and then its back to banging up an intake hole...my landlord is gonna love me.

[GaGrown]

160 cfm,your room is 3mx3mx3m? You should use a 265 cfm fan!

Ga Grown!

[faithlessxxx]

No, my room is about 1.3m * 1.8M, though about 4m high. But this fan is going straight into a tube though...Unles I don't need to, of course.

[GaGrown]

yes! It needs to be hooked straight to the fan.Get a seperate fan to vent the room and bring in fresh air.The fan hooked to the cooltube will draw the heat out.Are you gonna use a timer or a thermostat for the fan on the cooltube?

Ga Grown!

[faithlessxxx]

.

Lol, yes but will my fan Max. air: 160 m³/h be powerful enough for a 400w HPS? Do I need it on a timer? I guess time will show, I thought it would run as long as the bulb does...?

[justaseed]

for a 400 watt cooltube you want a minimum of about 465cfm to properly cool the bulb. i'm not sure watt 465cfm converts to in metric, sorry. i had a 400hps cooltube with only 4inch duct booster and it wasn't so good but i upgraded to a 465 squirrellcage fan going by specs on the cooltube package and it was 100x better. with the 465cfm 400hps cooltube i could keep the temps in the closet the same as the ambient temp in my house at all times!