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i get a little more than a pound off 6 plants
so lets factor in these numbers
6 plants will get you 1.2 pounds at 5 weeks veg 8 weeks flowering
to get 20 pounds you will need 120 plants
20 pounds is equal to 3360grams
and since even some of the most experienced growers dont average a gram per wat
youll need 5 1000 watt systems and 5 1000 watt mh conversion bulb
the ceapest youll find a 1000 watt system is about 340 shipped
5 1000 watt conversion bulbs=100 dollars shipped
with all that heat your going to need a suncourt inline duct fan at least 1 per light there about 60 bucks each shipped=300
nutrients are going to run you about 100 bucks a month
ppm/tds meter 100 bucks
ph tester 60 bucks
18/6 with a 1000 watt will run your light bill up about 70 to 90 bucks more than usual so will say 80 which=400
mylar about 60 bucks shoped
light sytems-340x5=1700
light bulbs-100x5=500
duct fans-60x5=300
nutrients-=100
ppm/tds-100
ph tester-60
light extra=400
mylar=60
this is not including wich ever hydro method u choose but for 120 plants it will at least be 8 thousand more if you try to buy it
so total cost before your hydro build is 3220
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