pctechwright
New member
Aloha All! This may be my first time posting - but have been (like many) a lurker for years and years. So Hello - this is me~!
General information at a glance.
1 month perpetual grow, 1 plant per month.
Grow cab will be located inside my bedroom, I am a legal medicinal patient in Hawaii so ambient temps are sometimes wacky. Night is sometimes cool - so my run schedule would be to have the flower light on during night. I do have window A/C rated for 5000 BTU, cooling the cab room - which is 12'x11' - i plan on testing without A/C because that will bring my electric down immensely!
Lighting exhaust will exhaust into the upper chamber, where the flower and veg chamber exhausts to. Passive intakes will be on the outside wall of each grow chamber, with both the room "exhaust" will be on the top of chamber, above the lights.
From what i understand, 1 grow per month, for a 8 week flower cycle. Start 1st plant - veg for 3-4 weeks, place into flower. Start 2nd plant when 1st goes into flower. Place 2nd plant into the flower chamber in 3-4 weeks, start another plant. At this time 1 plant will be 4 weeks into flower when the 2nd vegging one goes into flower, with 1 just starting veg - rinse and repeat. I am not stuck on this perpetual grow, so i left some room in the chambers to try other styles.
Im putting this here for feedback - but make it worthwhile and constructive please
The cab will be 6'x3'x6' (72"x36"x72")
• 72 inch - 6 feet long
• 36 inch - 3 feet wide
• 72 inches - 6 feet tall
It will have two grow sections. One for flower and one for veg/mother (if i decide to have a mother). i assume i can put both the mother and clones in the same compartment as they both require 18/24 hours of light. It will be a large NGB style cab, with 3 compartments overall, 1 for flower, 1 for veg/mother and 1 for electrical stuff. The section sizes are as follows (all without growing equipment):
• Flower Section - 48"x36"x59" (4'x3'x4'11")
• Veg/Mother section - 24"x36"x48" (2'x3'x4')
• Electrical Section(above veg)- 24"x36"x72" (2'x'3'x6')
The ventilation:
• Lights and A/V Hood ventilation
• Two semi-separate cooling systems - both end up in a single chamber
• Both ventilation systems will be directed into the top 3rd chamber with the electrical
• Carbon scrubber rated for 440CFM will be used by a 400CFM inline fan - sucking -. Filter will be located in the 3rd upper chamber where both veg and flower will be vented into
• all the intakes will have the PVC pipe bends on the inside only. It doesn't need to be stealth but it's just looks ugly to me.
From what i read about HVAC ventilation, it takes 1sq ft of open inlet per 300 CFM. So in my case, 400 CFM would be a little over 1sqft - 1sqft is 144sq inches. I will have 7 holes for intake overall - 6 total for both chambers (3 apiece) and 1 for the A/C hood. I imagine that to keep negative pressure you should be at that level or a tiny bit below? Please correct me if I'm wrong. Anyways, from the above website my calculations came to 6 holes, each at 5.5inches in diameter. There are a few holes internally, which I'm not really sure how to calculate that into the equation, any help with that would be kickass.
The lighting will be:
• Flower - 600w HPS Air Cooled sealed hood
• Veg/Mother - 125w fluorescent - 4x28w
More Shit:
• Flower will be a Ebb+flow system with rockwool - homemade system BTW
• Fert will be whatever i get at the hydro shop - any suggestions? I read Fox Farm is supposed to be super good. Id love to go 'organic' but im not sure if they have true organic hydro nutes.
• I want to use the veg for clones - but since im going to be doing so little cloning, i doubt the plants will get that tall, especially since im vegging for 4 weeks only - so there may be a better way to utilize the above space...
• much smaller Ebb+flow with Rockwool for the clones as well.
• Below is a crude diagram of the system setup. Both Fans are 400 CFM inline.
Questions:
1. Air takes the path of least resistance - so by having the HPS light vent into the top chamber, will that lower the air flow thru the actual flower chamber thru the passive ducts? Any Suggestions?
2. Will the 400CFM for the filter be enough power to create the negative pressure for the passive intakes?
I have a few more questions but i forgot them...surprise lmfao
General information at a glance.
1 month perpetual grow, 1 plant per month.
Grow cab will be located inside my bedroom, I am a legal medicinal patient in Hawaii so ambient temps are sometimes wacky. Night is sometimes cool - so my run schedule would be to have the flower light on during night. I do have window A/C rated for 5000 BTU, cooling the cab room - which is 12'x11' - i plan on testing without A/C because that will bring my electric down immensely!
Lighting exhaust will exhaust into the upper chamber, where the flower and veg chamber exhausts to. Passive intakes will be on the outside wall of each grow chamber, with both the room "exhaust" will be on the top of chamber, above the lights.
From what i understand, 1 grow per month, for a 8 week flower cycle. Start 1st plant - veg for 3-4 weeks, place into flower. Start 2nd plant when 1st goes into flower. Place 2nd plant into the flower chamber in 3-4 weeks, start another plant. At this time 1 plant will be 4 weeks into flower when the 2nd vegging one goes into flower, with 1 just starting veg - rinse and repeat. I am not stuck on this perpetual grow, so i left some room in the chambers to try other styles.
Im putting this here for feedback - but make it worthwhile and constructive please
The cab will be 6'x3'x6' (72"x36"x72")
• 72 inch - 6 feet long
• 36 inch - 3 feet wide
• 72 inches - 6 feet tall
It will have two grow sections. One for flower and one for veg/mother (if i decide to have a mother). i assume i can put both the mother and clones in the same compartment as they both require 18/24 hours of light. It will be a large NGB style cab, with 3 compartments overall, 1 for flower, 1 for veg/mother and 1 for electrical stuff. The section sizes are as follows (all without growing equipment):
• Flower Section - 48"x36"x59" (4'x3'x4'11")
• Veg/Mother section - 24"x36"x48" (2'x3'x4')
• Electrical Section(above veg)- 24"x36"x72" (2'x'3'x6')
The ventilation:
• Lights and A/V Hood ventilation
• Two semi-separate cooling systems - both end up in a single chamber
• Both ventilation systems will be directed into the top 3rd chamber with the electrical
• Carbon scrubber rated for 440CFM will be used by a 400CFM inline fan - sucking -. Filter will be located in the 3rd upper chamber where both veg and flower will be vented into
• all the intakes will have the PVC pipe bends on the inside only. It doesn't need to be stealth but it's just looks ugly to me.
From what i read about HVAC ventilation, it takes 1sq ft of open inlet per 300 CFM. So in my case, 400 CFM would be a little over 1sqft - 1sqft is 144sq inches. I will have 7 holes for intake overall - 6 total for both chambers (3 apiece) and 1 for the A/C hood. I imagine that to keep negative pressure you should be at that level or a tiny bit below? Please correct me if I'm wrong. Anyways, from the above website my calculations came to 6 holes, each at 5.5inches in diameter. There are a few holes internally, which I'm not really sure how to calculate that into the equation, any help with that would be kickass.
The lighting will be:
• Flower - 600w HPS Air Cooled sealed hood
• Veg/Mother - 125w fluorescent - 4x28w
More Shit:
• Flower will be a Ebb+flow system with rockwool - homemade system BTW
• Fert will be whatever i get at the hydro shop - any suggestions? I read Fox Farm is supposed to be super good. Id love to go 'organic' but im not sure if they have true organic hydro nutes.
• I want to use the veg for clones - but since im going to be doing so little cloning, i doubt the plants will get that tall, especially since im vegging for 4 weeks only - so there may be a better way to utilize the above space...
• much smaller Ebb+flow with Rockwool for the clones as well.
• Below is a crude diagram of the system setup. Both Fans are 400 CFM inline.
Questions:
1. Air takes the path of least resistance - so by having the HPS light vent into the top chamber, will that lower the air flow thru the actual flower chamber thru the passive ducts? Any Suggestions?
2. Will the 400CFM for the filter be enough power to create the negative pressure for the passive intakes?
I have a few more questions but i forgot them...surprise lmfao
