basement closet 7'Lx4'Wx8'H setup for max odor stealth...

[CWF]

She hates the smell.. but doesn't give a rip about the rest, so whatever I do must be ultra-low odor. I built a framed, sheet-rocked, painted, basically sealed basement closet, 7'x4' floor (8' ceiling), with no windows, in my basement. Note: only the 4'x4' end of the room will be used as a flowering grow space, the rest is for storage of supplies and drying. I installed a very tight door with a 1' square darkroom (lightproof) vent mounted low in the door, and used weather-seal adhesive strips to completely seal (and light-proof) the door. When you close the door, it is totally dark inside - I load old-school photo film for processing in there.

I plan to exhaust at enough cfm to keep negative air pressure relative to the house, to insure no odors escape inside to draw the ire of she who will bitch about it. I don't need the friction.

I have a nearby, un-used thru-wall dryer vent to exhaust to the outside from. I plan to use a low-noise Panasonic Whisper fan, or maybe a max-fan pro, inside the room, drawing thru a big carbon filter mounted high above the lights, exhaust thru a Uv/ionizer scrubber, then out thru the closet wall down approx 15' of 6" acoustic duct, out the dryer vent. The room is 224 cu ft.

Closet is currently used to store my guitar/band gear, and has a shit-load of fine old Fenders and Gibson guitars I'll be moving to my upstairs walk-in closet, and a lot of old amps I'll be selling off in the next month or two (I have too much gear (I know - impossible, right?), but I rarely gig anymore, due to death of my band leader, all this covid virus crap-o-la, so I don't need it).

I'm very handy with tools, and am an electrical wizard/engineer. Closet is already wired on it's own 20A breaker, just need to cut the exhaust duct hole. This is actually my first serious grow indoors (old-school guerrilla outdoor grower)

Lighting: I grabbed a HLG 350R on sale to start, maybe adding another later. I'm in the lower latitude SE, but basement gets enough leaked A/C to stay at 77-78 F. Temps not an issue, especially with the LED vs the 600W HPS fixture, which gets too dang hot to seal up. So I went with LED, and will give the old 600W HPS/MHgear to a friend just starting out, with an appropriate room for a hot light.

I just want to grow 2 nice plants for personal-use stash right now.

I welcome all comments and criticism. I want to get this right the first time.

 

[Tracker]

Sounds nice! Post some pics when you've got it set up.

 

[jondamon]

She hates the smell.. but doesn't give a rip about the rest, so whatever I do must be ultra-low odor. I built a framed, sheet-rocked, painted, basically sealed basement closet, 7'x4' floor (8' ceiling), with no windows, in my basement. Note: only the 4'x4' end of the room will be used as a flowering grow space, the rest is for storage of supplies and drying. I installed a very tight door with a 1' square darkroom (lightproof) vent mounted low in the door, and used weather-seal adhesive strips to completely seal (and light-proof) the door. When you close the door, it is totally dark inside - I load old-school photo film for processing in there.

I plan to exhaust at enough cfm to keep negative air pressure relative to the house, to insure no odors escape inside to draw the ire of she who will bitch about it. I don't need the friction.

I have a nearby, un-used thru-wall dryer vent to exhaust to the outside from. I plan to use a low-noise Panasonic Whisper fan, or maybe a max-fan pro, inside the room, drawing thru a big carbon filter mounted high above the lights, exhaust thru a Uv/ionizer scrubber, then out thru the closet wall down approx 15' of 6" acoustic duct, out the dryer vent. The room is 224 cu ft.

Closet is currently used to store my guitar/band gear, and has a shit-load of fine old Fenders and Gibson guitars I'll be moving to my upstairs walk-in closet, and a lot of old amps I'll be selling off in the next month or two (I have too much gear (I know - impossible, right?), but I rarely gig anymore, due to death of my band leader, all this covid virus crap-o-la, so I don't need it).

I'm very handy with tools, and am an electrical wizard/engineer. Closet is already wired on it's own 20A breaker, just need to cut the exhaust duct hole. This is actually my first serious grow indoors (old-school guerrilla outdoor grower)

Lighting: I grabbed a HLG 350R on sale to start, maybe adding another later. I'm in the lower latitude SE, but basement gets enough leaked A/C to stay at 77-78 F. Temps not an issue, especially with the LED vs the 600W HPS fixture, which gets too dang hot to seal up. So I went with LED, and will give the old 600W HPS/MHgear to a friend just starting out, with an appropriate room for a hot light.

I just want to grow 2 nice plants for personal-use stash right now.

I welcome all comments and criticism. I want to get this right the first time.

You may get some ideas from this redesign I did a while ago?

My New Closet Re-Design

Hey folks Well i thought i would just drop a new thread on showing how i am setting up my new closet. Originally my closet door was in the opposite wall in a completely different bedroom. Now after taking down a wall to allow for a new door, fitting a piece of Metal Box section into the...

rollitup.org

Ultimately though remember a few Simple rules for smell.

Filter CFM should be HIGHER than fan CFM

use passive vents if you can to keep negative pressure.

If using an intake fan then get lower CFM than your exhaust by around 30%.

 

[CWF]

Not intending to use intake fan, as the big lightproof vent should provide plenty of passive intake air. I'll read your thread, thanks.

HLG 350R LED unit arrived today - they shipped fast. Unboxing now.. going to hang it and run it a bit to see how hot closet gets with no exhaust. The ol' HPS 600W would heat it to over 100F in just an hour.

 

[CWF]

You may get some ideas from this redesign I did a while ago?

My New Closet Re-Design

Hey folks Well i thought i would just drop a new thread on showing how i am setting up my new closet. Originally my closet door was in the opposite wall in a completely different bedroom. Now after taking down a wall to allow for a new door, fitting a piece of Metal Box section into the...

rollitup.org

Ultimately though remember a few Simple rules for smell.

Filter CFM should be HIGHER than fan CFM

use passive vents if you can to keep negative pressure.

If using an intake fan then get lower CFM than your exhaust by around 30%.

So, thinking of this exhaust configuration : a 6"x24" carbon filter --> adjustable speed fan --> ionizer/ozone filter --> 6" acoustic duct over to dryer vent.

I could mount the fan and UV/ozone filter inside the closet, or mount outside the closet. I am not sure about the buildup of leakage ozone in the closet or basement, but obviously I don't want any. There shouldn't be any leakage, and all of it will leave the house via the dryer vent. I need about, well, 224 (actual) CFM to exhaust the room once a minute. Most 6" fans can handle this easily, so I anticipate running at a lower speed than wide open.

Couple questions for y'all:
1. regarding duct penetrations thru sheetrock : I will need a 6" duct flanged poke-thru to run duct from the closet, across the basement to the dryer vent for my filtered exhaust air. I would prefer a ceiling-mounted right-angle fitting, so I can run duct between above floor joists. A straight fitting won't work because a bedroom floor is directly above, so height restricted with just the space between the joists. This would be the cleanest, neatest solution, and more preferable to me than going straight thru the wall.

2. (anyone) can-filter vs phresh filter (6" x 24") : which is better? Looking at specs, they both have the same weight of carbon. Can-filter is a tad heavier and costs a little more, comes with pre-filter. I'm leaning toward the can-filter.

 

[ducks13]

You should need to run it to the dryer vent, just exhaust it out of your closet after going through your charcoal filter. Your fan will have to work hard to move air through the filter and all that ductwork to the vent if you do what you've planned.

 

[Cookie Rider]

I have a similar setup.
Ductwork wise, if you can go 8” -I wish I did.
Thinking you could run fans slowly and get good smell filtration and move enough volume to create the negative pressure you want. With less fan noise.
I made the 6” smooth wall ducts work.
But no longer flowering in summer as venting too fast for temps, won’t scrub the smells enough.

 

[ComfortCreator]

Longer ducting runs cause significant cfm loss. Whatever size vent you can fit. Go with the biggest. You have to exhaust out of the building if no smell is critical.

Excellent lighting choice. Its plenty for 2 but soon enough (about a week) you will be ready to grow 4.

 

[CWF]

Thanks to all for the tips! Exhaust will have to go outside, because washer and dryer are in basement and she does laundry down there, walks right past the closet. I will def do some testing before starting plants in there. I have an outdoor grow to tend right now, so I'm in no big hurry. I have time for experimenting and testing, and trying out suggestions.

I could vent from closet straight thru wall to outside, but vent will be on the side of the house instead of in the back. Might be a bit too conspicuous, at least until I plant a couple tall cedars or junipers to hide it. food for thought...

Any opinions on quiet fans and carbon filter brands? Anyone have experience with the ozone in-line filters? After much reading, I am considering not using an Ozone filter. They are not environmentally friendly, very expensive, and lots of articles say they aren't as effective as carbon. I may just "super-size" the carbon filter and vent straight thru the wall to the outside. I'll be looking at nurseries for some tall landscaping plants to hide the vent.

 

[perramas]

AC Infinity make solid fans. For filters look into Phat or Phresh carbon filters. They both have 2 inches of carbon unlike the cheaper Amazon filters with 1.5 to 1.8 inches of carbon.

 

[CWF]

I've got an S&P TD-Silent fan, but it is only 330 cfm unloaded. I've been using it to vent smoke from my coffee roaster, lol. Pretty stained inside - I best buy a new one. Yes, I am a coffee snob.

I have a couple can-lite 6"x24" on the way - found them cheap. One to draw exhaust thru, and one to run as a scrubber inside the closet. That is plan A. They have 2" carbon.

Today I removed an ill-conceived A/C duct to the closet and taped off the T and register. Made sure the register was light-proof with lots of tape and a clamp.

 

[gas house]

can filters use pelletized carbon vs the crushed carbon in phresh filters... more exposed surface area of carbon equals cleaner air. no question phresh makes the best carbon filter available... for quiet and efficient fans its either the best, ac infinity or almost as good, vortex s-series...sorry but ive gotta add...your an electrical wizard(mighty big claim)and you bought that janky ass quantum board fixture? id be pissed if i bought a grow light and opened the box to find that....hell an apprentice could DIY a better light cheaper

 

[perramas]

Thats the big problem with basement growing the central air/heating system.

 

[CWF]

can filters use pelletized carbon vs the crushed carbon in phresh filters... more exposed surface area of carbon equals cleaner air. no question phresh makes the best carbon filter available... for quiet and efficient fans its either the best, ac infinity or almost as good, vortex s-series...sorry but ive gotta add...your an electrical wizard(mighty big claim)and you bought that janky ass quantum board fixture? id be pissed if i bought a grow light and opened the box to find that....hell an apprentice could DIY a better light cheaper

Ah, here comes the RIU snark. Sneering criticism masquerading as advice, and passive-aggressive insults as a defense mechanism for a threatened ego. Fuck off. CLICK

I guess I am done here.

 

[Monster_of_Au]

Thanks to all for the tips! Exhaust will have to go outside, because washer and dryer are in basement and she does laundry down there, walks right past the closet. I will def do some testing before starting plants in there. I have an outdoor grow to tend right now, so I'm in no big hurry. I have time for experimenting and testing, and trying out suggestions.

I could vent from closet straight thru wall to outside, but vent will be on the side of the house instead of in the back. Might be a bit too conspicuous, at least until I plant a couple tall cedars or junipers to hide it. food for thought...

Any opinions on quiet fans and carbon filter brands? Anyone have experience with the ozone in-line filters? After much reading, I am considering not using an Ozone filter. They are not environmentally friendly, very expensive, and lots of articles say they aren't as effective as carbon. I may just "super-size" the carbon filter and vent straight thru the wall to the outside. I'll be looking at nurseries for some tall landscaping plants to hide the vent.

if the smell is your biggest concern then I would vent via carbon filter into your storage room then vent out of there via another carbon fan out of the house. one should be enough but 2 definitely will be, and no ozone

 

[gas house]

Ah, here comes the RIU snark. Sneering criticism masquerading as advice, and passive-aggressive insults as a defense mechanism for a threatened ego. Fuck off. CLICK

I guess I am done here.

truth hurts dont it

 

[greenmobster440]

Caught a comment of yours in another thread n thought I'd stop y and see what you've been doing. Love the description of your space. Would be great to see some pics. Did ya get the smell out?

 

[formularacer]

Start of the revival of zombie threads

I have the same issue. Wife hates the smell. I have small tent with inside carbon filter. Then I built another filter system which pulls in air from room and runs it into two activated carbon filters and a canister. I can smoke a joint and no smell escapes. Planned upgrades is to bring in fresh air to cool tent when light is off.