Growing Cannabis (250W) Shopping List


by Nebula Haze

250W HPS grow lights

See More Growing Setups
 

250W HPS Grow Setup (For Hobbyist Growers)

Cost Estimates

  • Total Setup Cost: $605.00
  • Estimated Electricity Cost: $33-69/month (based on $0.12/kWH to $0.25/kWh – see breakdown)
  • Total Cost for Entire First 4-Month Grow (Setup + Electricity): $881 ($98-220/ounce)
  • Total Cost for Second Grow (Nutrients + Electricity): $324 ($36-81/ounce)

* Alternative/Equivalent LED Grow Light: Kind LED Grow Light “K3 L600”

Note: Because the 250W light runs significantly cooler and tends to grow smaller plants compared to the bigger HPS grow lights, the 250W setup uses a cheaper exhaust fan and carbon scrubber compared to the other HPS setups, which brings down the overall cost a bit.

Examples of Plants Grown in this Setup

2 days after auto-flowering cannabis seedlings sprouted

Auto-flowering cannabis plants at week 6 - cozy in their tent!

From left going clockwise: Dinafem Critical Jack, Dinafem Sour Diesel, Dutch Passion Blue AutoMazar

Got a 6+ oz Harvest! Read the tutorial on how to grow exactly like this! (in this setup)

Example of a possible harvest with a 250W HPS

A hydroponic plant grown in this setup (6+ oz harvest!) – Read the grow journal!

Original Amnesia cannabis plant under a 250W light

 

Download Shopping List PDF

Grow SpaceRecommendedAlternative / NotesCost
? Grow TentA 2’x4’x5′ grow tent (can be upgraded up to a 400W)A grow space smaller than 2’x4’x5′ doesn’t have room to fit a good hood/reflector$95.00
? 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 iPower Carbon Filter, 6″ x 16″ versionMust be hooked up to exhaust fan to remove odors$65.00
→ 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. Anything that measures temperature & humidity will do.$15.00
? Small Fan(s)For inside the grow space – 1-2 small clip-on fansUse a small oscillating fan if it fits$30.00
    
Grow LightRecommendedAlternative / NotesCost
? 250W Grow Light Alternative: Kind LED Grow Light “K3 L600” 
→ 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 Bulb250W Metal Halide bulb (for the vegetative stage)Any new 250W MH bulb (don’t get used bulbs)$15.00
→ HPS Bulb250W HPS Bulb (for the flowering stage)Any new 250W HPS bulb will work (don’t get used bulbs). If possible get one rated at 32,000 initial lumens as it is the brightest 250W HPS bulb. This is the brand name (expensive) one I use if you’re interested, though a generic bulb works just fine!$15.00
→ BallastYescom 250W (MH & HPS) Digital, Dimmable Ballast250W 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:$605.00
  (plus $30-125 for growing medium)

 

See Additional Grow Setups

 

Estimated Total Electricity Cost for 250W Grow Light and Fans ($0.12/kWh) = $33/month

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

Electricity Cost for MH/HPS Grow Light: $17/month

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

MH/HPS Grow Light Wattage: Total of 250W 

At $0.12/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is $17.

HOURS x COST/HOUR = 

558 x (0.12 x 0.250) = $17

 

Electricity Cost for Exhaust Fan: $11/month

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

Exhaust Fan Wattage: 120W

At $0.12/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is $11.

HOURS x COST/HOUR = 

744 x (0.12 x 0.120) = $11

 

Electricity Cost for 2 Clip-On Fans: $5/month

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

Exhaust Fan Wattage: 30W each x 2 = Total of 60W

At $0.12/kWh (everyone is charged different rates, but this is about average for cities), the monthly cost of electricity for the light is $5.

HOURS x COST/HOUR = 

744 x (0.12 x 0.060) = $5

 

 

 

 

Estimated Total Electricity Cost for 250W Grow Light and Fans ($0.25/kWh) = $69/month

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

Electricity Cost for MH/HPS Grow Light: $35/month

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

MH/HPS Grow Light Wattage: Total of 250W 

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 $35.

HOURS x COST/HOUR = 

558 x (0.25 x 0.250) = $35

 

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 $23.

HOURS x COST/HOUR = 

744 x (0.25 x 0.120) = $23

 

Electricity Cost for 2 Clip-On Fans: $11/month

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

Exhaust Fan Wattage: 30W each x 2 = Total of 60W

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 $13.

HOURS x COST/HOUR = 

744 x (0.25 x 0.060) = $11

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