Growing Cannabis (400W) Shopping List

by Nebula Haze

400W HPS grow lights

See More Growing Setups
 

400W HPS Grow Setup (For Hobbyist Growers)

  • Average Yields: 7-14 ounces
  • Harvest every 4 months to get about 1.75 – 3.5 oz/month
  • Recommended 2-6 plants
  • Grow space is 2'x4'x5' or larger

Cost Estimates

  • Total Setup Cost: $744.00
  • Estimated Electricity Cost: $46-96/month (based on $0.12/kWH to $0.25/kWh – see breakdown)
  • Total Cost for Entire First 4-Month Grow (Setup + Electricity): $1128 ($81-161/ounce)
  • Total Cost for Second Grow (Nutrients + Electricity): $414 ($30-59/ounce)

* Alternative/Equivalent LED Grow Light: Kind LED Grow Lights "K5 XL750"

Check Out More Examples of Grow Setups

 


 

Download Shopping List PDF

Grow SpaceRecommendedAlternative / NotesCost
☐ Grow TentA 4'x4'x6.5' grow tent (plenty of extra room, can be upgraded to a 600W)A tent or grow space that is 2'x4'x5' or larger$120.00
☐ Exhaust FanCan Max 6" Fan – 334 CFMA quality 6" exhaust fan – hang inside tent to quiet$70.00
☐ Odor Control https://www.growweedeasy.com/smell 
→ Carbon Scrubber6-inch Phresh Filter, 400 CFM, 6" x 16" versionMust be hooked up to exhaust fan to remove odors$130.00
→ Ona Gel (optional)Ona Gel in Original ScentEffective for hiding odors in living spaces, but do not place too close to plants or it may affect their smell!$18.00
☐ ThermometerIncuThermTM Digital Thermometer HygrometerThis model is meant for incubating chicken eggs, but I like how accurate it is. Any thermometer/hygrometer combo will do.$15.00
☐ Small Fan(s)For inside the grow space – 1-2 small oscillating fansPossibly get an additional 1-2 small clip-on fans$50.00
    
Grow LightRecommendedAlternative / NotesCost
☐ 400W Grow Light Alternative: Kind LED Grow Lights "K5 XL750" 
→ HoodHydro Crunch Large Air Cooled Grow Light Reflector with 6" Duct & Glass PanelA 6" hood/reflector made for MH/HPS lights, air-cooled is best.$70.00
→ MH Bulb400W Metal Halide bulb (for the vegetative stage)Any new 400W MH bulb (don't get used bulbs)$14.00
→ HPS BulbDigilux 400W HPS Bulb (for the flowering stage)Any new 400W HPS bulb will work (don't get used bulbs). If possible get one rated at 57,000 initial lumens as it is the brightest 400W HPS bulb.$45.00
→ BallastApollo Horticulture APL400 (MH & HPS) Digital, Dimmable Ballast400W digital ballast for MH/HPS (dimmable is nice)$80.00
☐ Rope RatchetsGet at least 2 pair; one pair for grow lights & one pair for the carbon filterSometimes included with your grow light$16.00
    
Nutrients & pHRecommendedAlternative / NotesCost
☐ Base NutrientsDyna-Gro Foliage Pro & Bloom (works for soil, coco coir or hydro)https://www.growweedeasy.com/nutrients$30.00
☐ Cal-Mag SupplementBotanicare Cal-Mag Plushttps://www.growweedeasy.com/cal-mag$18.00
☐ pH Testing KitGeneral Hydroponics pH testing kit (with PH Up & PH Down)https://www.growweedeasy.com/ph$19.00
☐ Measuring SpoonsStandard measurement spoonsMost of us already have these in our kitchen$13.00
    
Growing MediumRecommendedLearn MoreCost
☐ Choose One   
→ Super Soil"Super Soil" is amended & composted soil that is alive with microorganismshttps://www.growweedeasy.com/super-soil$40.00
→ SoilThe most common hand-watered growing mediumhttps://www.growweedeasy.com/soil$30.00
→ Coco CoirA hand-watered growing medium made of coconut huskshttps://www.growweedeasy.com/coco$30.00
→ DWC / HydroRoots are suspended in oxygenated water, resulting in faster growth and bigger yieldshttps://www.growweedeasy.com/hydro$125.00
    
MiscellaneousRecommendedAlternative / NotesCost
☐ Get Seeds (learn where to get seeds in the US) https://www.growweedeasy.com/seedsVaries
☐ 24 Hour TimerElectrical timer by HydrofarmDigital or mechanical – Any timer will do$10.00
☐ Plant Twist TieGrower's Edge Twist Tie w/ CutterAny twist tie meant for plant training (say you need something to hold up vines)$6.00
☐ Water ContainersGet 1 and/or 5-gallon containers (like the ones you’d get with water delivery)For mixing nutrients and moving water$10.00
☐ Ducting & Ducting Clamps6-inch flexible ventilation ducting & 3 pairs of 6” inch ducting clampsTo connect carbon filter to hood to exhaust fan$10.00
☐ Check out this list of helpful grow tools you might not know about https://www.growweedeasy.com/cool-growing-tools 
    
  Estimated Cost:$744.00
  (plus $30-125 for growing medium)

 

View Additional Grow Setups

 

Estimated Total Electricity Cost for 400W Grow Light and Fans = $96/month

This includes the cost of running the grow lights and fans.

Electricity Cost for MH/HPS Grow Light: $56/month

Total hours: 558 light hours/month (grow lights are on 18 lhours/day for 31 days)

MH/HPS Grow Light Wattage: 400W 

At $0.25/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is…

HOURS x COST/HOUR = 

558 x (0.25 x 0.400) = $56

 

Electricity Cost for Exhaust Fan: $23/month

Total hours: 744 fan hours (fan is on 24 hours/day for 31 days)

Exhaust Fan Wattage: 120W

At $0.25/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is…

HOURS x COST/HOUR = 

744 x (0.25 x 0.120) = $23

 

Electricity Cost for 1 Clip-On Fan: $6/month

Total hours: 744 fan hours (fan is on 24 hours/day for 31 days)

Exhaust Fan Wattage: 30W

At $0.25/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is…

HOURS x COST/HOUR = 

744 x (0.25 x 0.030) = $6

 

Electricity Cost for Oscillating Fan: $11/month

Total hours: 744 fan hours (fan is on 24 hours/day for 31 days)

Exhaust Fan Wattage: 55W

At $0.25/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is…

HOURS x COST/HOUR = 

744 x (0.25 x 0.055) = $11

 

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