air intake inside the house instead of outside

sanet

Member

• Oct 28, 2012

• #1

Hi the temperatures have dropped down where i live and now if i use the air from outside as intake the temperatures go too low in my box. So i'm not sure if in my case taking the air from inside my house could be enough for my 8 plants, especialy in terms of CO2... cuz i guess outside there's lots more of it.

my setup :

4x4 grow box
600W hps
8 skunk #1 grown from seeds
8 air pots 10L
2 weeks in the flowering phase

thanks

 

jondamon

Well-Known Member

• Oct 28, 2012

• #2

You would think so hey??

bt its actually quite the opposite as far as Co2 levels go.

Ambient house air generally has a greater amount of Co2 ppm's. ambient house air 400-600ppm. Outside air 200-400ppm.

switch your intakes.

 

dbkick

Well-Known Member

• Oct 28, 2012

• #3

or get a thermostat (CAP tmp-1) and plug the intake fan into it. that way you'll precisely control your temperature.

 

sanet

Member

• Oct 28, 2012

• #4

thanks jon i switched

the CAP tmp-1 is exactly what i been looking for but i can't find any product like that in france. all they have is dumb cheap thermostat with no sensor. u gotta put it plugged in your box lol.

is there something cheaper than the CAP tmp-1 ? that could be sent to my country

this one seems better btw :

http://www.amazon.com/TMP-DNe-Day-Night-Temperature-Control/dp/B0026QU966/ref=pd_rhf_cr_s_cp_2

edit : well nvm i need a 240v one...

 

jondamon

Well-Known Member

• Oct 28, 2012

• #5

Could you order a UK version and use a EURO adaptor?

im not an electrician but it should work?

if so get an SMS SMART CONTROLLER.

you set an idle speed and a temp to maintain speed. It automatically adjusts your fan to the correct speed for running the temp.

Another alternative is a dehumidifier.



J

 

sanet

Member

• Oct 28, 2012

• #6

well i guess i'd need a convertor and not an adaptator. most shops from UK refuse to ship out of their country dunno why. the SMS can be an option if i can ensure that it won't buzz or hum with a RVK from System Air. System Air also make dimmers in 240v for their fans and there's for sure no buzzing but they are like twice more expensive than the SMS and not automated (you can plug a thermostat though).

 

jondamon

Well-Known Member

• Oct 28, 2012

• #7

I have used the SMS SINGLE FAN SPEED CONTROLLER with RVK150L1 660cmh with zero hum.

And also used the SMS SMART CONTROLLER with RVK150A1 460cmh with zero hum.


Both work well. The single fan speed controller has a dial for you to adjust running speed. The smart controller is temperature dependant, so you set your desired temp and it adjusts the running speed for you.


J

 

jondamon

Well-Known Member

• Oct 28, 2012

• #8

The other alternative is to make your own using a Variac.


By using a Variac it allows the wattage to be controlled going to the fan to reduce speed. The hum comes from cheap controllers cutting the power on and off to the fan to reach the desired speed.


J