light trap help

[Tonygreen]

You might have seen my thread about the portable AC's and after looking into it the smell situation will cause problems it seems.

I need to increase my ventilation intake so I can take advantage of the cool weather coming. The window I need to use faces a neighbors though about 40 feet away so I cant have light shining through an intake vent sittin in the window or it will look like a spot light.

I saw this posted somewhere...

"use flexible ducting.then you just make a curly frie shape with it and wah-la your good.light dosnt bend around corners so the twist in the ducting will keep light from escaping "

Does this sound like it will work good? Any other ideas? I seen some big built up light trap boxes but I dont have room for that, I also seen someone suggest black pvc with curl sections leading out to the intake.

Any good ideas or advice? I was going to go with a portable AC but after looking into it the smell leaking is not acceptable to me and a mini split is not in the budget.

Think the flex duct curling will work?

 

[Tonygreen]

Im thinking of trying the curled circled up flex duct and put it in a big box to hold the shape maybe, just cant have light coming out of the intake....

 

[Tonygreen]

Right now I just have a flap of panda covering the window going to the floor and sucking a little in through the corner unsealed, working ok for 1 1000w hps but when i flower i wanna turn on the second.

Im using a 6 inch can fan to cool the one light but I am going to hook up my 440cfm whisperline when the second light goes on providing I can get a light leak free intake,,, at that point I can use the 6 incher as an intake fan if i need more cooling. Temps will be in the 40s and 50s most nights in october and 30s and 40s in november when the flowering is occuring so if i can solve this light leak on the intake I reckon i can cool both lights good enough and wont have the smell issues from the portable AC....

 

[b3fr33]

Make a box, with baffles, working on the principle that light does not travel around corners and black absorbs light

 

[Backyard Farmer]

Www.acmeag.com

 

[EclipseFour20]

I bring outside air into my environment and here is what I would do--
1. Run rigid ducting only (no flex duct)--more efficiency (less fan motor required)...I do run the flex duct from the lights though.
2. Use rigid elbows (no flex duct) to make your "turns" and ducting closest to the light, paint the insides flat black (clean the insides with vinegar to remove any oil first).
3. Add a filter box...I made one using 1 1/2 thick styrofoam sheets (4'x8' at Home Depot) and the box is about 15" wide and 24" long and a spot for a $4 standard 12"x12" air filter inside. Place the filter box as close as you can to the window...that way everything past the box will always be clean of dust.
4. Place a spot light inside your duct to test for light leaks--and use aluminum tape to fix.

And that is my $0.02 on the matter...lol.

 

[Granger2]

So are you going to need AC when winter is over? You have one window or more? I would want the window, from the ouside to look totally normal. Just because the neighbors can't see inside or see light coming from inside, doesn't mean it doesn't look suspicious. Get a junked or very cheap used window unit, pull the guts out of it, install in your window with maybe plywood in the front of the unit with a hole for intake duct. That will give you intake that looks normal from the outside. On the inside, do like Eclipse with the metal duct with metal elbows, flat black on the inside.

With a window, if you need AC, install a window banger. That doesn't account for lamp cooling. Can you intake from the house? Good luck. -granger

 

[vostok]

A simple plumbers "S" bend painted flat black inside does the trick in most cases any more just hang a little speaker cloth over the end acts as a filter too!

but do note that too many bends and kinks will affect you air flow even make noise

 

[Treetroit City]

Thermoflo ducting comes already black on the inside and is much better quality than most flex duct.

 

[Tonygreen]

So are you going to need AC when winter is over? You have one window or more? I would want the window, from the ouside to look totally normal. Just because the neighbors can't see inside or see light coming from inside, doesn't mean it doesn't look suspicious. Get a junked or very cheap used window unit, pull the guts out of it, install in your window with maybe plywood in the front of the unit with a hole for intake duct. That will give you intake that looks normal from the outside. On the inside, do like Eclipse with the metal duct with metal elbows, flat black on the inside.

With a window, if you need AC, install a window banger. That doesn't account for lamp cooling. Can you intake from the house? Good luck. -granger

This is just a winter set up granger, ill do two runs here if all goes well.

The trouble with the window is they are vertical windows that have crank handles then then the windows fold outward. they are set against the outside of the house wall plane and inside is a giant screen that covers both that is built into the molding. They are set about 5 inches into the wall then this built in screen that doesnt come off then the windows outside that and vertical folding outward.

I have a set of blinds in the 5 inch recess so it look like a window with blinds form outside, layers of panda behind that to block the light from going out.

like these...

http://www.marvin.com/images/2011/beauty_ultimateFrenchPushOutCasementWindows.jpg

But in front of the window is the built in screen built into the molding for the frame of the window that does not come out.

 

[Tonygreen]

So I was thinking of putting the ducting with curves in a box so its neat and not laying all over. If no light goes around the bends i could plug it into the panda and then come the blinds and windows opened some little bit. Thoughts?

 

[Backyard Farmer]

This will ruin your airflow

http://www.acmeag.com/literature.asp search for "B158" on the page