The Mill's Pride Club

[bostrom155]

Hello everybody, must probably dont remember me. but hey to pine, sumo, mystic and all. well after a 2 year break i'm getting back in. going to start around mid august, cant wait to share and talk to everyone

 

[psoulocyb3]

some finishing touches remain, but temps are 82 inches from the bulb... mid 70s everywhere else... 400w hps from a ballast rebuild kit. cooltube built if needed when the canopy reaches there.

the volume of the cabinet isn't terrible. all in all, i'm quite pleased.

 

[Pittsburgh Kush]

Read through this entire thread, so much great information in here. Thanks to all. I can't wait to get a cab grow myself going.

 

[mysta177]

Man havent been on this thread in a while! Looks good fellas. Where is pine and simon how about malibu? Well here is some pics Ive done with my c13......Ben out of the game for a min but im back! mysta

not shown.....6in Duct....a scrub in the atty.....and a 3rd louver in the mid

 

[icough2getoff]

Hey mysta, welcome back and good idea putting the scrubber in the attic. I thought of doing that but instead put mine on a shelf above my cab hidden in some empty boxes.

Do you notice much difference in door suction with the 3rd louver added?

Here's a couple pics I took last night, day 29 flower of my cab. I have two girls in there under a 400w MH.

 

[mysta177]

Oh yea for sure I noticed a diff in suction. Another way I play with the suction is in the filters I add in the louver. Depending on how many filters I put in each one effects the suction

 

[Pittsburgh Kush]

Where would optimal placement of a darkroom louver be? Nice grow mysta, I just picked up a closet maid cabinet from Home depot. Measures apx. 48" x 22" x 6'. Just getting everything together.

 

[icough2getoff]

Hey Pittsburgh, it depends where your exhaust hole is. Air flows the path of least resistance so ideally you don't want the exhaust and intake on the same side of the cab. Best to have them on opposite sides of the cab. If you have a powerful enough fan, the air will come flying through those intakes and swirl around nicely in there. Most people put theirs in the back, some put them on the sides. Make sure to install them above the top of the pots you'll be using so you don't restrict the airflow.

 

[Pittsburgh Kush]

Thanks... I think that in order to create the best airflow, they should end up being on the sides, with the ehhust dead center ion the top, thanks for the advice.

 

[mysta177]

very nice.......my next grom im going to try and do 9.....3gal bags consisting of golden goat....Purple Indica.....and Bubba. Its going to be a low yielding run but the smoke should be top notch!

 

[BlueberryNutz]

heres a pic of mine that ive had for a while. got it dialed in pretty good finally. 400w hps w/ mh conversion for veg. homemade cool tube with a 6" can fan. utility area has its own bathroom fan but it wont work cuz the suction of the can is too strong lol. its pretty damn hard to open the doors. i have to pull at a corner until it depressurizes and then it will open lol. eventually i will throw in my carbon filter

 

[wintermoon]

Simon, didn't want to leave you hanging thinking you had to do all the calculating for me so I thought I'd post some of the math with a couple of questions.



Left Section - Flower Chamber
Square Ft.
23"W 20"D
23" x 20" = 460
460 sq. in. / 144 sq. in. = 3.2 sq.ft.

Cubic Ft.
23"W 20"D 47"H
23/12 = 1.2'W
20/12 = 1.6'D
47/12 = 3.9'H
1.2' x 1.6' x 3.9' = 7.5 cubic ft.

Lower Right Section - Veg Chamber
Square Ft.
23"W 20"D
23" x 20" = 460
460 sq. in. / 144 sq. in. = 3.2 sq.ft.

Cubic Ft.
23"W 20"D 30"H
23"/12" = 1.2'W
20"/12" = 1.6'D
30"/12" = 2.5'H
1.2' x 1.6' x 2.5' = 4.8 cubic ft.

Middle Right Section - Mother Chamber - directly above Veg chamber
Square Ft.
23"W 20"D
23" x 20" = 460
460 sq. in. / 144 sq. in. = 3.2 sq.ft.

Cubic Ft.
23"W 20"D 17"H
23"/12" = 1.2'W
20"/12" = 1.6'D
17"/12" = 1.4'H
1.2' x 1.6' x 1.4' = 2.7 cubic ft.

Top Section - Clone/Scrubber/Fan Chamber
Square Ft.
47"W 20"D
47" x 20" = 940
940 sq. in. / 144 sq. in. = 6.5 sq.ft.

Cubic Ft.
47"W 20"D 20"H
47"/12" = 3.9'W
20"/12" = 1.6'D
20"/12" = 1.6'H
1.6' x 1.6' x 3.9' = 10 cubic ft.

Total Cab = 24 Cubic Ft.

Light Calculations @ 50 Watts Per Sq. Ft.
3.2 sq. ft. x 50 = 160

Not factoring in penetration 150 watts would work, but would bigger be better ...like a 250 watt HPS, or would it be overkill.

I'm using the CFLs with the thought that the amount of watts of CFL should produce the same heat as the same amount of watts of HPS. For example 150 watts of cfl light should produce the same heat as 150 watt HPS.

Ventilation Calculations

Exhaust Area

6" diameter ducting / 2 = 3" in. Radius x 3.1416 = 9.42 x 3" Radius = 28.26 sq. in

Ideal Intake Area double the exhaust area

28.26 x 2 = 56.52 sq. in.

Photo Louver Intake Area

8" x 8" = 64 sq. in.

NOTE: 64 - 56.52 = 7.5 sq. in. Extra intake area

Calculating Blower CFM

I need to move 24 cubic feet of air 4 times per minute.

24 x 4 = 96 cubic ft. per minute 96 CFM


How do I calculate the extra CFM needed to pull through the scrubber?

Cann 33 info from the Can web site:
Dimensions: (with pre-filter)
·Outside Diameter: 305mm/12"
·Height: 330mm/13"
·Total Weight: 11.5kg/25.3lbs.
·Carbon Weight: 7.5kg/16.5lbs.
·Carbon Bed Depth: 50mm/2"
Max Operating Temp: 80ºC
Pressure drop at max cfm: 180pa/. 75wg



Stanly Blower

3 speeds
Low = 190 CFM
Medium = 260 CFM
High = 310 CFM

NOTE: These are estimates from a thread on IC.

I think the Low setting at 190 CFM should be plenty for pulling through the scrubber, exchanging air 4 times per minute, and make up for the extra 7.5 sq. in. of intake that was extra ...creating negative pressure?

How much heat will 500 watts of light make, if I put a 250 HPS in the flower cab, and a 250 MH in the veg chamber, and if my ambient temps are 75 degrees, will the fan pull enough air in to keep the cabinet under 80 degrees?

This is why I'm using the cfls first. I literally pulled them out of ceiling fans and porch lights I already had.

Last, since in my sog I'm looking for just a single large cola, wouldn't CFLs work anyway? Should I be worried about penetration that much?

Anyway, I've been trying to do my homework here, but I'm wondering if the only way I'm going to find out what will work is just to start cutting holes, hooking up ducting, and plugging in lights, and fans. It doesn't seem like there's any real moethod to calculating everything.

I have been growing in some rubbermaid containers for the past year with increasing success. I have a large setup for 2 plants in a ScrOG that I use for flower then a smaller rubbermaid for veg/mothers, and then I just have desklamp in a closet for clones/seedlings. While this works great I have basically two closets with some form of growing going on and they aren't exactly stealthy. I have recently started thinking about an all-in-one cabinet solution like the one I have quoted.

Has anyone successfully done a multi-chamber ClosetMaid build like this? I have been trying to think of ways to do it before making any purchases. I figured I could easily make the chambers light tight by using some weatherstripping on the chamber walls while putting the cabinet together, but I am having a hard time thinking of a way to exhaust all the chambers on a single fan. Would it be possible to do this or would I be better off dedicating a fan to the flower chamber and then one for the veg/clone/mother chambers?

If the experts think it would be better to dedicate one large cab for HIDs/flower, and then a smaller cab for veg/mother/clones I would be willing to go that way too, but I really would like an all-in-one solution.

Any advice would be greatly appreciated. I really want to upgrade to HID and consolidate everything.

 

[icough2getoff]

wintermoon, I can't speak from experience when it comes to having veg and flower chambers in the same cab but I'm pretty sure I've seen it done. I have read of some people advising against it since you can't really determine for sure that there are no light leaks (unless maybe you put a small child in there to tell you, lol). As for venting all with the same fan, perhaps you could install darkroom louvers in the back of each chamber and then the adjoining wall. Then it would suck a little air through each one. I want to say I've seen it done with PVC elbows but I don't know how light proof those are, I'm just throwing out ideas, but if it were me I'd try the darkroom louvers, but it might not be the cheapest way. Personally though, I prefer separate cabs just to be safe.

Figured I'd drop by this thread and show the freaky side of these two girls that I chopped yesterday. BMR F2 from clone under a 400W MH grown in a coco drip.

first a full cab shot 3 days into flower

 

[FreezerBoy]

wintermoon, I can't speak from experience when it comes to having veg and flower chambers in the same cab but I'm pretty sure I've seen it done.

People do it all the time. You just need separate chambers. Here's the most famous example. The AMAZING NGB Cab

 

[Cozy Amnesia]

icaughtogetoff, that looks like a tasty IPA to go with the tasty buds.

 

[wintermoon]

Well I have reconsidered about doing the multi-chamber box based on the advice here. I am a newb to this stuff and I don't want to risk the light leaks.

So if I still go with that model cabinet(71x29x20) do think a 600w HPS would be overkill? I was thinking 400w but, then a buddy suggested going with 600w. Would that work well with a vortex fan and AC hood?

 

[KUSHEATER1]

400 watt

 

[icough2getoff]

I agree. You might be able to make a 600 work but a 400 will be all you need with that much space.

 

[wintermoon]

400w it is then. Now I just need to buy some tools and all the gear. Ha!

 

[wintermoon]

Is a Can 50 carbon filter going to be too big for this? I am looking at that or the Can 33 filter.