newbie: should an exhaust fan stay on 24hrs?

del taco lover

Well-Known Member
i have a single inline fan that i use that is connected to my air-cooled fan. the way i plan on having it work is the negative pressure from the fan will pull in fresh air from the passive intake.


would that work? also does the fan need to stay on 24 hrs or should it be on a timer? i will also have a 12" fan circulating the air.


one more thing, what is the best and safest way to give power to eevrything? im just gonna be growing in a bedroom, and i will have the light+ballast plugged into timer), exhaust fan and circulating fan. can i use just a regular power strip for all this or is there a beter way?
 

Dirtyboy

Well-Known Member
Fan on 24/7 is best.

Check the room out and see if all out lets are one 1 circuit. If on 2 then split electric things up.
 

del taco lover

Well-Known Member
thanks for the replies. how would i tell if all the outlets in my bedroom are on the same circuit? there are 4 outlets in my room total. also, should i be using the glass provided with my hood?

thanks
 

Dirtyboy

Well-Known Member
Use the glass. Find the circuit breaker and shut power off in that room. Check for power at each out let. If power at 1 and the rest dnt then 2 circuits.
 

del taco lover

Well-Known Member
one other question, i bought a can-filter 9000 to help once these things go into flower. what i was thinking was a setup of:

canfilter>duct>aircooled reflector+glass>duct>exhaust fan.

will this work ok do you think? do you think there would be enough negative pressure from the filter to bring in enough fresh air?

thanks
 

smallclosetgrowr

Well-Known Member
i have my exhuast fan on 24/7 only because my lights are on at nite so during the day it can get hot and really humid so it helps to prevent bud mold. if your lights are on only during the day u could just keep it on the light timer ...upto u i guess
 

mossad420

Member
I keep my exhaust fan on the same time as the lights for veg (18/6), and I run it 24/7 for flowering to keep the humidity down + they seem to like it.
As far as the power goes if you are on 120v with 15amp circuit breakers you essentially have 120x15=1800watts before you will trip the breaker. If youre house is wired to CDN, or USA code there is no safety issue running just under that (say 1700), as your wire is rated for more than 15a to ensure the breaker flips before any dmg can be done to the wire.
The downside to running multiple motors off one circuit is that they have an in-rush current, meaning for the initial startup it will draw more current than when it is running (think of it as the motor building up momentum once it has a decent RPM). I would recommend starting your highest current drawing, more sensitive equipment first if it is one the same circuit as other equipment. For example my light + exhaust are on 1 timer, and everything else is on a second timer that comes on about 5 mins after the light ignites. Never had an issue.
I run a 400wHPS, 6inch 400CFM inline fan for exhaust, 12" honeywell fan for intake, 14" oscillating fan for circulation, and 6inch desk fan cooling my ballast all on one 120v 15a circuit and I could add a second light if I wanted as I'm only pulling 8amps.
 

del taco lover

Well-Known Member
thanks for all the replies guy, my tent is a GL80 with three 5" intakes. dimensions are 2.7x2.7x5.11. i only planned on using one intake although i can use 2 if need be. also the lights will be powered on at 4pm and will poweroff at 10am the next day for veg.
 
I know it has been awhile but I was wondering how you tent worked out. I just bought one and I am kinda curious how the whole air flow thing is going to go.
 
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