Cab ventilation question

[minitehnicus 0]

Hey all,

new grower planning on building my first cab in a week or so. It will be 100*70*160cm (3.2*2.2*5.2 ft), so a surface of .7sqm (7.5 sqf) and a volume of 1.12 cubic m (39.55 cf). I will use a 250W HPS bulb and no carbon filter. I plan on growing 3-4 plants with scrog.

So I found this 220v pc fan: http://www.alliedelec.com/search/productdetail.aspx?sku=70225864#tab=specs. Money is kinda tight at start now with all the other expenses so can't really afford another fan for intake. My problem is that with it's 370 cubic m/h (200cfm) it may be a bit overkill with just passive intake. What do you guys think? Buy a lower cfm fan for now that i can use later for intake with this larger one? Or i'm just worried too much and it won't really be a problem? Or just make bigger passive intake?

Cheerios and happy growin!

[Pi2 301]

Hi,

Your fan is expensive.

Have a look : http://www.hydroponi...45m3h-9281.html

[minitehnicus 0]

The link was just for reference. I found the fan for about 13 euros.

[Dust 6,284]

well yeah if the passive intake is not enough just make it bigger ^^ but i think the girls should be ok, careful with the heat maybe but 1mx70 should be fine with 250w

Best is to give a try and see what it says