cabinet specifications okay?

johncs320

Active Member
I've been reading a lot of books and growguides online and following numerous grows, so here it goes. What do you cool people think of the specs for this cabinet im planning on doing in the near future: is it sound?

Grow cabinet 3.5ftW x 2.25ftD x 4.42ftH (42in x 27in x 53in)
600w, 6plant SOG (10-12inches apart, I have access to clones, but i thought i'd play it safe and space them out in case they branch out more than they should, indicas only)


Volume = 34.8cft
SQFeet = 7.875sqft

Rec. Blower --> Volume * 5 => 174CFM
WPSF --> 600w/7.875 = 76.2wpsf
LPSQ --> 88000/7.875 = 11,174.60lpsq

Height Requirements:

600w light fixture - 7"
600w gap from plants - 15.5" *lights will be air cooled
Plants Height - 17.5" *flower at 5" tall, expecting a 2.5x growth increase
Iris Res.(14.5gal) - 7" *This is short, but the gallons don't sound to skimpy The dimensions are 6.5"Hx39"Wx20D". I'm leaning towards an SWC.

Total Height = 47"

There is still 6 inches that are not used that can be used for whatever needs it.
--------------------------------
Cost:

4" Vortex Centrifugal 172CFM = $150
Iris Reservoir (55quarts) = $20
Super Sun Reflector = $115
4" Dutch Breeze Carbon Filter = $85
DualDia. Airpump GH 4 Outlets = $70
------
Total: $440 *This list is by no means complete, but i needed a sketch of the major costs.

The numbers make sense with everything i've read, but many articles and posts i've read don't recommend a 600w for the square footage. But its only 75wpsf and the lumens arnt that high when you consider the gap height. I need some comments from the actual doers :)

thank you all,
 

ocb123

Active Member
Your well geared up mate, I'd just go for it. Personally I'd say use 2 smaller bulbs for better light distribution but I'm a CFL fan anyways....

If your worried about odours check this out:

AP281 Hepa with Ioniser

https://www.rollitup.org/indoor-growing/7074-easy-build-diy-carbon-filter.html

It's much cheaper!
Don't forget an oscillating fan too:

Growroom Products >  Environmental Control > 6 Inch Clip-on Fan

Also you may know that UVB increases THC production in cannabis, with this in mind check this out:

Lucky Reptile Compact UV Sun 23W US-23

Hope some of this is of help. Get your grow on!
 

johncs320

Active Member
Thanks mate, i had forgotten that UVB rays increase thc production, i'm definitely going to read up on that bulb. Any reading suggestions?

There are two reasons why I'm hesitant to try an only CFLs grow.
1. I already have a 600w ballast and bulb.
2. Some articles mention that CFLs or any other lighting that isn't HID produce buds that arn't as dense.

I haven't tried it so i take what i read with a grain of salt, only actual experience will tell. But that seems to be the general consensus.

Anyway, thanks for the information. I like that DIY carbon filter thanks for the redirection.
 

ocb123

Active Member
No probs, if you want some more info on UVB effects on cannabis you could watch this, the blokes stoned and partly reading from a script but the general info is good:
POT-TV: Marijuana Man Grow Show
Its the video called THC, UVB and Me.

This is fairly comprehensive notes on THC production in general:
Marijuana THC

This is a complete book on marijuana botany, you may have read this before but I thought it might be of interest anyway:
Marijuana Botany - Google Book Search

I have heard the same as well, but I think that if you use high output CFLs and can achieve the same light as you could with your HID I would personally think that the CFL buds would be bigger. I know that someone is gonna try and give me shit for sayin that but thats my opinion.
Check out these CFLs:

enviro-gro-lites Online Shop

And a bit of background CFL knowledge:
Envirolites indoor hydroponic envirolite grow lights, grow cabinets and reflectors.

Hope this is of use mate and not a load of shit you already know and I'm sorry for linking you to death, its just the best way to spread the word. lol.
 

Hawk

Well-Known Member
I don't have much if any advice for you. But I'd like to see you proceed with your plan. However my reasons are kinda selfish. I'd like to know how easily you can cool the space with a 4" 174cmf > SS hood w/ 600w of HID > 4" scrubber arrangement.

My space is a little smaller (1.8' deep x 3.25' wide x 4.6' high) and my light is much smaller (250w HID). I'm cooling with a 6" 440cfm fan and an unusually long duct run (~50 feet), SS2 hood, and a fairly high carbon content DIY scrubber (1 foot square with 2" thick carbon bed on 5 sides). I very roughly estimate I'm only actually exhausting 200cfm. Could be more, could be less--hard to measure. My temps are terrific. But I'm considering bumping up my wattage and I'd like to know how far I could go before more steps are needed for cooling.

:blsmoke:
 

ocb123

Active Member
The easy way to increase the flow of air through your vent system is to use larger diameter ducting. This will also decrease the amount of noise reverberated around the ducting by your fan. However the limiting factor to your vent setup is your 50ft long exit tube, even halving the length of this pipe will make a big difference to your temps. Also try using multiple, smaller fans, this create a better airflow than 1 big fan.
Hope this helps mate.
 

johncs320

Active Member
ocb123 - Thanks for the links, the video with with mj man was very interesting. It makes me feel like I've been ripped off with stuff i've smoked that probably didn't have uvb light, lol.

So, to help the fan do its job optimally, one should use bigger ducting, and use a reducer to connect the fan? For example, an 8" flexible ducting connected to a 6" centrifugal fan via reducer? thanks

Hawk - Okay bro, Ill pm you when i get started. I'll probably do a grow diary on the forum as well. I have to wait till my next few paychecks come in.

I might go with a 6" vortex with a speed controller, I heard it is less noisy and lasts longer that way. Anyways, thanks for your input.
 
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