I have 44x49x90cm big floower bix with 150w MH/HPS bulb. I was wondering how much ventilation i will need in this box? Will be enough if I put one 92mm (21cfm) fan in the bottom for intake and one 120mm 28-40cfm? Or two fans like this one? I will also add one 120mm 28-40cfm in the box for air mix. What do you think will be this enough for 150w bulb?
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Ventilation question in my floower box
- Thread starter IndianHay
- Start date
H
herbal essences
A search of 150w ventilation came up with alot of results, try the 150w club and resource thread also
Ventilation 101
fan-intake calculator
Unless you know what you're doing, you'll want to avoid intake fans. They're the fastest way to positive pressure which is to be avoided at all times. My cab is 56x75x137cm with a 120/38 mm 76 CFM axial in a cold garage and it gets the job done but can't run a real scrubber. It did OK with a DIY Odorsock and my low odor Destroyer but, my current 8 Mile, at only 3 weeks, is already a true stinker.
kno3brock
Member
Ventilation 101
fan-intake calculator
Unless you know what you're doing, you'll want to avoid intake fans.
+1
Two holes for intake at bottom. One hole with fan at top. All 3 holes 120mm.
Its too much heat with 1x120mm fan on top and two holes at the bottom. What to do? I also have 3 120mm fans in the box to blow over the light. You think it will help a lot if i mount two fans on the reflector that they will suck the heat from the lamp to the higher place on the box?
