noob alert, first grow

4

420 carson

Member
Looking at an inline duct fan pushing 80cfm for ventilation. Temps are pushing 82. Want it lowered a bit. At the moment only have a fan pushing in fresh air with passive outtake
 
4

420 carson

Member
I have a 400w my/hps. But it's not cool tubed. It's in the open so temps are quite on the up side. What's the best ventilation for this type
 
TheYokel

TheYokel

Well-Known Member
Any fan/exhaust set-up that causes negative pressure. Move your fan to suck air out instead of pushing it in. Use the passive on the intake and the active on the exhaust.

That'd be where I'd start.
 
W

woody333333

Well-Known Member
420 carson said:
Looking at an inline duct fan pushing 80cfm for ventilation. Temps are pushing 82. Want it lowered a bit. At the moment only have a fan pushing in fresh air with passive outtake
Click to expand...
Not a big enough fan to vent anything more than a couple cfls ..................and ffof kicks ass.....
 
curious2garden

curious2garden

Well-Known Mod
Staff member
420 carson said:
Looking at an inline duct fan pushing 80cfm for ventilation. Temps are pushing 82. Want it lowered a bit. At the moment only have a fan pushing in fresh air with passive outtake
Click to expand...
Earlier in your thread a mech e gave you fan advice, go back and take a look. I would not waste my time on any inline, get a larger exhaust fan. I've been very happy with Max Can Fans http://www.canfilters.com/max_fan_home.html

hth
 
hbbum

hbbum

Well-Known Member
Is the cardboard blocking it? May not be moving enough air? How big is your intake?
 
A

Autogrow123

New Member
auto white widow from pyramid seeds
Shown first pistil at day 28 and growing healthy and big but no real bloom or flowering almost day 70 reaching but looks like day 70 healthy plant many branches and one thick stalk. Help appreciated
 

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