I'm trying to maximize production as a Micro Tier II grower in Oregon with an existing 35'x40' shop with 13' high ceilings and an attached 10x20 room previously used for painting. An Upgraded UT 50 STD 120 transformer will allow for up to 20kW of flowering lights. With the transformer becoming the limiting factor I have scaled back my expectations to 8lbs every 3 weeks rather than the 15lbs every three weeks I was aiming for.
My previous grow had a flowering area in a 6'x6' tent with 4-600W air cooled lights. I had 3 18 gallon res tanks which sprayed roots inside of 6' post sleeves 1 min out of every 5.
In this next grow the flowering room will be 22'x 24' with adjacent 22'x8' veg room. The flowering room will be divided into SIX 8'x10.5' sections designed to support two strains at three stages of growth separated by 3 weeks time.
Each of these 8'x10.5' sections will have:
1. light fixture with 84 COBs running at 37W
2. two 50 gal res tanks
3. 8 - 10.5' pvc rails with 12 - 2" net potted plants per rail
WHY? with micro controlled nutrient drip systems on res tanks (located outside of flower room walls) The grow should run itself. In the small scale run grow the res tanks did not need to be changed at all during the 9 weeks of flowering time. I believe 1 full time person and 1 part time person can handle the trimming and breeding of the plants. I was planning on the flowering room will be sealed so CO2 generators will be used. I'm trying to determine where I should set the CO2 level at to not waste gas. Since propane will need to be delivered I'm trying to determine cost and to see if running a sealed grow is feasible at this size. In my 6'x6' tent I had gas in bottles which I refilled.
My questions are many. Here are a few:
How does a COB every 1.0 square feet compare with 4 600 watt HPS in 36 square feet? In other words how do the light values compare between 36 COBs run at 37Watts to 4 600W HPS (assuming both of these set ups covered 36 sqft?
What level of CO2 should be ran if sealed? Given the flowering room will be 6,900 cubic feet with 576 plants growing with a density of 1 plant per 0.875 square feet. How many CO2 generators will be required and how much propane gas will that require per month? I'm wondering if venting the grow and smell filtering the output will be what I actually go with because of cost.
With the 1600 square feet roof area being used for rain catching with one 2500 gallon water tank be enough to run the grow assuming average rainfall here in the Willamette valley of Oregon? Every 3 weeks the flowering room will consume 4x50gal for nutrient fill and 4x50gal plain water for flush. How much water will be lost in evapotranspiration? If I ran a sealed grow with dehumidifiers draining back into water system is there any water loss at all?
My previous grow had a flowering area in a 6'x6' tent with 4-600W air cooled lights. I had 3 18 gallon res tanks which sprayed roots inside of 6' post sleeves 1 min out of every 5.
In this next grow the flowering room will be 22'x 24' with adjacent 22'x8' veg room. The flowering room will be divided into SIX 8'x10.5' sections designed to support two strains at three stages of growth separated by 3 weeks time.
Each of these 8'x10.5' sections will have:
1. light fixture with 84 COBs running at 37W
2. two 50 gal res tanks
3. 8 - 10.5' pvc rails with 12 - 2" net potted plants per rail
WHY? with micro controlled nutrient drip systems on res tanks (located outside of flower room walls) The grow should run itself. In the small scale run grow the res tanks did not need to be changed at all during the 9 weeks of flowering time. I believe 1 full time person and 1 part time person can handle the trimming and breeding of the plants. I was planning on the flowering room will be sealed so CO2 generators will be used. I'm trying to determine where I should set the CO2 level at to not waste gas. Since propane will need to be delivered I'm trying to determine cost and to see if running a sealed grow is feasible at this size. In my 6'x6' tent I had gas in bottles which I refilled.
My questions are many. Here are a few:
How does a COB every 1.0 square feet compare with 4 600 watt HPS in 36 square feet? In other words how do the light values compare between 36 COBs run at 37Watts to 4 600W HPS (assuming both of these set ups covered 36 sqft?
What level of CO2 should be ran if sealed? Given the flowering room will be 6,900 cubic feet with 576 plants growing with a density of 1 plant per 0.875 square feet. How many CO2 generators will be required and how much propane gas will that require per month? I'm wondering if venting the grow and smell filtering the output will be what I actually go with because of cost.
With the 1600 square feet roof area being used for rain catching with one 2500 gallon water tank be enough to run the grow assuming average rainfall here in the Willamette valley of Oregon? Every 3 weeks the flowering room will consume 4x50gal for nutrient fill and 4x50gal plain water for flush. How much water will be lost in evapotranspiration? If I ran a sealed grow with dehumidifiers draining back into water system is there any water loss at all?
Last edited:
