I502 Commercial Grow

Engineer502

New Member
Hey all,

First post, and it's a big one. Myself and a few friends applied to produce and process cannabis under Washington I-502 laws and I'd like to get your input into the best grow system. We have access to part of a warehouse with about a 25'x45' shop space, reaching 18' at its peak. The other part of the warehouse is packed with offices that we can also utilize. Within a year, we'll be able to expand into another part of the building, doubling all the space available. We have southern exposure and are thinking about putting up a greenhouse behind the building, too. Here's a pic (ignore the tables!).



We figure that the 25'x45'x18' space should be used as a double-decker flowering area (where all the tables are in the photo). Specifically, we could split the lower level into three 12'x24' grows and build a deck on top of that to support another set of flowering rooms. The plan is to outfit each room with HPS, CO2, circulating fans, HVAC and filtered exhaust.

There's a pretty good sized office downstairs, 15'x22', which we plan to use as a veg room. There, we plan on using LED + T5 with all the vegging plants on small commercial shelving. There a few offices upstairs that are slated for plant processing.

Everything is planned to be deep water culture. Plants will veg in the downstairs office, then be relocated to a flowering room.

As you can see, there's nothing revolutionary here - pretty standard grow. If this is the way to go, so be it, but I'm wondering if you guys have any creative ideas for really cranking up the grow density. I've seen the stuff some of you guys come up with and it's mind-blowing.

We've got a decent budget and a lot of technical expertise behind us (a couple of techies and one grow guy). At the end of the day, it's just about producing the most high quality bud we can. Our grow guy is a real go-getter, but he's used to DWC closet grows. None of us have done this on a large scale and we're a bit concerned that basically just scaling up a closet operation with a few extra bells and whistles may work, but it won't be optimal.

LED vs HPS, DWC vs SCROG, vertical grows, rotary grows, etc etc .. lots of options.

So the question is .. with a healthy budget, technical workforce and free reign in this building, what would you do? Thanks! :bigjoint:
 
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keepitlegal

Member
Hi
First off does Washington regulate the number of plants? remember big brother does! How much power the building has will dictate a lot of what you can do. 4 rooms 10x24x10 framed ,insulated, dry-walled, taped and muded then seal everything with silicone . You are going to want the height (big plants, big colas) and multiple rooms makes it much easier come trim time (you could do two rooms if you have the man power) Next i would ditch dwc and go for a simpler approach to get you guys started. Each room I would run 5 4x4 trays lined up with 6 1000w hps (air cooled of course). 2 dehums per room and 2 split units per room. For me I would run coco in 3 gallon smart pots 5 plants per tray ,canna nutes for sure. Keep it simple hand water daily less chance of failure. As far as co2 I would run off bottles a 20lb bottle will get you 4-5 days if the room is sealed properly. Bottles are easy and again less problems and heat. Best advice going from a closet to commercial is much more work but same basic properties apply.

Something like this
hope it helps
 

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Engineer502

New Member
Hey, thanks for the reply. That's a nice straightforward grow you've got there. Under I502 laws, Washington regulates "canopy space". The tiers go all the way up to Tier 3, which is currently 21,000 sq ft. What is the "split unit" you're talking about? Combination air heater and cooler?

One thing I'm confused about is HVAC. I see a lot of books claiming something like a 5 minute air recycle time for every room. What do they really mean by this? Is this really necessary if the air is being supplemented with CO2 and the humidity / temperature is well-managed? It seems to me that in theory, you could go days using the same "air", assuming the plant gets CO2, water, nutrients, O2 and light, right? Ok, that may be extreme, but it seems equally extreme to have to condition 2400 cubic feet of atmospheric air over 5 minutes for each of those rooms you described. The HVAC bills would be more than the lighting bills!
 

keepitlegal

Member
Correct! Combination cooling and heating. Correct again you will not need to worry about cycling your air in a sealed environment thats only for passive setups.Dehums, a/c's and co2 does that (you wiil never have outside air enter your room). Snapsprovolone is correct there are many things you are missing so I would do more research. Experience is key to commercial growing oh yea and a proven strain.
good luck
 

BenFranklin

Well-Known Member
It will be nice when the government wakes up to how much electricity is used in these massive grows and decides to let people do the shit outside.

Speaking of electricity....

I hope that building has enough resources in electricity to be able to power your entire operation, otherwise, you're in for a doozy of a wake up.
 

Commander Strax

Well-Known Member
Wait... you are gonna chop up that beautiful wedding venue, what girl doesn't dream of a wedding reception next to a roll up door?
 

potpimp

Sector 5 Moderator
I would ditch the DWC for a nice NFT setup; I think it's the most efficient but flood and drain is simple and probably just as effective. It's all a matter of scale; if you can successfully pull off a small grow the chances are good that you can do a larger one. You're going to need someone VERY good at cloning and VERY diligent at heading off any insect problems and skilled at reading your plants to know what they need. The value of the end product will be proof of the worth of your guy. I wish you the very best!
 

SnapsProvolone

Well-Known Member
When canopy based instead of plant count based restrictions apply, growing many smaller plants with minimal veg time results in higher yearly production totals.

Sea of Green for canopy grows in Washington.
 

Engineer502

New Member
Thanks for the ideas everybody. It's becoming apparent that to hit the ground running, we really need to reach out to some consultants, even for this relatively small operation. That being said, this is definitely an art form and no two growers will agree on everything. It's a lot like engineering - no two engineers will come up with the same solution to a complex problem like this. Don't let anybody tell you growing good weed is easy, haha. :joint:
 

Engineer502

New Member
Speaking of consultants, can anyone recommend reputable consultants who are knowledgeable enough to weigh in on a facility approaching 10,000 square feet? GGS, GrowersRus, etc?
 
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