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hilbilly hifi

Passive Intake

Growing in a 1.2 x 1.2 tent, I've just been running a 6' extraction fan to date without any massive issues but I get the feeling some sort sort of intake would be beneficial. Don't really want to run another fan so passive intake would be my preference. I have three main concerns which are light leaks, smell and negative expansion. I have some 5 inch ducting lying around and if I could incorporate this into the setup without having to buy anything that would be great. The tent is in a room where the window stays open.

 

Questions:

How many ports should I run the ducting through? Will my carbon filter still deal with the smell or will there be some escape/will I still have negative expansion? Best way to bend ducting to avoid light leaks? 

 

I had buried my head in the sand regarding having intake until now but coming to the end of veg for this grow seems as good a time as any to broaden my horizons.

 

Thanks in advance.

 

 

 

 

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Odd one. You mean youve got the tent all sealed up? You'll do much better in all regards if you open up one or two of the vent holes. Yep run some ducting through. Get at least black wrapped ducting and do a couple 90 degree bend outside the tent or if you're short for space some cooker hood filter taped over the ends does a pretty good job at blocking light and helps keep pests out

 

Sure others who know better than me will be along but hope that helps 

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Don't bother pissing around with ducting, open the vents and cover them with cooker hood filter material, ten quid from Robert Dyas...

Stops light in or out, stops bugs as well without reducing airflow...:yep:

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12 minutes ago, stu914 said:

without reducing airflow...:yep:

 

I found it crap to be honest and you'll be surprised just how much air flow it does reduce. I used ducting and found it to be a lot better. As an added bonus in winter it allowed me to put tube heaters inside the ducting to help keep temps up at lights out

 

Owd

 

 

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I'll give the ducting a shot first just cause it's on hand see how that goes will get a cooker hood filter if necessary then, two vent holes is plenty so? 

 

@Mackie yeah it was pretty sealed, I mean it was surely drawing a bit of air in places I wasn't closing the zips fully to meet each other etc. but not enough I'd imagine.

 

Sound for the help guys.

 

 

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30 minutes ago, Owderb said:

I used ducting and found it to be a lot better.

 

It's one way for the nasties to get in, I suffered from those buggers years ago and used filters ever since.

Always been a fan of overkill on the extract  and intakes as well so airflow's never been an issue.

 

Splashing out on the new room with an 8" systemair revolution vector silenced EC fan with matching carboair filter...:yep:

How's that for overkill on a 2 x 2 x 2m space....:rofl:  ( + 3 x 30cm passive intakes...;))

 

Happy New Year to you bud, let's hope it's better than the last

atb  :oldtoker:

 

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Tube heaters in ducting...Dam! Thanks for this tip :yep:

 

The 1k oil filled Rad is sending costs up during light off at this time of year.

 

This will change.

 

Tenchie.

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I use some chopped up ladies black tights over the ends of ducting, stops crap getting but doesn’t reduce any flow

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1 hour ago, Cafeowner said:

I use some chopped up ladies black tights over the ends of ducting, stops crap getting but doesn’t reduce any flow

 

 

Yes it does. Trust me it does

 

Owd

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3 hours ago, stu914 said:

Don't bother pissing around with ducting, open the vents and cover them with cooker hood filter material, ten quid from Robert Dyas...

Stops light in or out, stops bugs as well without reducing airflow...:yep:

 

This sounds like an awesum idea...i currently use ducting; would I get better airflow if I dumped it and used this stuff?

 

Cheers

 

Also @Owderb awesum shout on the tube heater mate :) 

 

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6 minutes ago, unity said:

would I get better airflow if I dumped it and used this stuff?

 

As you can see, Owd and I agree to disagree...the choice really is yours, all I can say is it works for me...at ten quid it's worth a try...:yep:

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On 1/3/2020 at 4:31 PM, Tenchie said:

Tube heaters in ducting...Dam! Thanks for this tip :yep:

 

The 1k oil filled Rad is sending costs up during light off at this time of year.

 

This will change.

 

Tenchie.

Two 180Watt 90cm tube heaters (or metre - lots of different sizes) are perfect to keep a 1mx1mx2m tent well heated.  Usually two at half power.   Big difference to your 1Kw - enormously :)     Peace

 

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